Represent sizes and offsets in bytes and hexadecimal values

Represent sizes and offsets in bytes and hexadecimal values

In current change reports, sizes and offsets are represented in bits,
and as decimal values.  Some users prefer having those offsets be in
bytes and as hexadecimal values.

This commits adds 4 new options to let users see sizes and offsets be
represented either in bits, bytes, decimal or hexadecimal values.

	* doc/manuals/abidiff.rst: Add documentation for the new
	--show-bits, --show-bytes, --show-hex and --show-dec options.
	* doc/manuals/abipkgdiff.rst: Likewise.
	* doc/manuals/kmidiff.rst: Likewise.
	* include/abg-comparison.h (diff_context::{show_hex_values,
	show_offsets_sizes_in_bits}): Declare new member functions.
	* src/abg-comparison-priv.h (diff_context::priv::{hex_values_,
	show_offsets_sizes_in_bits_}): Declare new data members.
	(diff_context::priv::priv): Initialize them.
	* src/abg-comparison.cc (diff_context::{show_hex_values,
	show_offsets_sizes_in_bits}): Define new member functions.
	* src/abg-default-reporter.cc (default_reporter::report): Adjust
	the call to maybe_report_diff_for_symbol.
	* src/abg-leaf-reporter.cc (leaf_reporter::report): Likewise.
	* src/abg-reporter-priv.h (convert_bits_to_bytes)
	(maybe_convert_bits_to_bytes, emit_num_value, show_offset_or_size)
	(show_numerical_change): Declare new functions.
	(maybe_report_diff_for_symbol): Take a diff_context in parameter.
	* src/abg-reporter-priv.cc (convert_bits_to_bytes, emit_num_value)
	(maybe_convert_bits_to_bytes, show_numerical_change)
	(show_offset_or_size): Define new functions.
	(represent): In the overload for method_decl, var_decl, use the
	new emit_num_value function.
	(represent_data_member): Use the new show_offset_or_size function.
	(maybe_show_relative_offset_change): Use the new
	convert_bits_to_bytes, diff_context::show_offsets_sizes_in_bits,
	emit_num_value functions.
	(maybe_show_relative_offset_change): Likewise.
	(report_size_and_alignment_changes): Use the new emit_num_value
	and show_numerical_change functions.
	(maybe_report_diff_for_symbol): Tak a diff_context in argument.
	Use the new show_numerical_change function.
	* tests/test-diff-filter.cc (in_out_spec): Add a new entry to test
	hexa and bytes output.
	* tools/abidiff.cc (options::{show_hexadecimal_values,
	show_offsets_sizes_in_bits}): New data members.
	(options::options): Initialize them.
	(display_usage): New help strings for the new
	--show{bytes,bits,hex,dec} options.
	(parse_command_line): Parse the new --show{bytes,bits,hex,dec} options.
	(set_diff_context_from_opts) Set the diff context wrt hex and
	bytes values.
	* tools/abipkgdiff.cc (options::{show_hexadecimal_values,
	show_offsets_sizes_in_bits}): New data members.
	(options::options): Initialize them.
	(display_usage): New help strings for the new
	--show{bytes,bits,hex,dec} options.
	(set_diff_context_from_opts): Set the diff context wrt hex and
	bytes values.
	(parse_command_line): Parse the new --show{bytes,bits,hex,dec}
	options.
	* tools/kmidiff.cc (options::{show_hexadecimal_values,
	show_offsets_sizes_in_bits}): New data members.
	(options::options): Initialize them.
	(display_usage):New help strings for the new
	--show{bytes,bits,hex,dec} options.
	(parse_command_line): Parse the new --show{bytes,bits,hex,dec}
	options.
	(set_diff_context): Set the diff context wrt hex and bytes values.
	* tests/data/test-diff-filter/test30-pr18904-rvalueref-report2.txt:
	New reference test output.
	* tests/data/Makefile.am: Add the new reference test output above
	to source distribution.
	* tests/data/test-abicompat/test0-fn-changed-report-0.txt: Adjust.
	* tests/data/test-abicompat/test0-fn-changed-report-2.txt: Likewise.
	* tests/data/test-abicompat/test5-fn-changed-report-0.txt: Likewise.
	* tests/data/test-abicompat/test5-fn-changed-report-1.txt: Likewise.
	* tests/data/test-abicompat/test6-var-changed-report-0.txt: Likewise.
	* tests/data/test-abicompat/test6-var-changed-report-1.txt: Likewise.
	* tests/data/test-abicompat/test7-fn-changed-report-0.txt: Likewise.
	* tests/data/test-abicompat/test7-fn-changed-report-1.txt: Likewise.
	* tests/data/test-abicompat/test7-fn-changed-report-2.txt: Likewise.
	* tests/data/test-abicompat/test8-fn-changed-report-0.txt: Likewise.
	* tests/data/test-abicompat/test9-fn-changed-report-0.txt: Likewise.
	* tests/data/test-abidiff/test-PR18791-report0.txt: Likewise.
	* tests/data/test-abidiff/test-qual-type0-report.txt: Likewise.
	* tests/data/test-abidiff/test-struct0-report.txt: Likewise.
	* tests/data/test-abidiff/test-struct1-report.txt: Likewise.
	* tests/data/test-abidiff/test-var0-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test0-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test1-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test10-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test11-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test13-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test21-redundant-fn-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test22-changed-parm-c-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test26-added-parms-before-variadic-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test27-local-base-diff-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test3-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test32-fnptr-changes-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test33-fnref-changes-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test34-pr19173-libfoo-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test35-pr19173-libfoo-long-clang-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test35-pr19173-libfoo-long-gcc-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test36-ppc64-aliases-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test37-union-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test39-union-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test40-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test43-PR22913-report-0.txt: Likewise.
	* tests/data/test-diff-dwarf/test8-report.txt: Likewise.
	* tests/data/test-diff-dwarf/test9-report.txt: Likewise.
	* tests/data/test-diff-filter/test0-report.txt: Likewise.
	* tests/data/test-diff-filter/test01-report.txt: Likewise.
	* tests/data/test-diff-filter/test1-report.txt: Likewise.
	* tests/data/test-diff-filter/test10-report.txt: Likewise.
	* tests/data/test-diff-filter/test11-report.txt: Likewise.
	* tests/data/test-diff-filter/test13-report.txt: Likewise.
	* tests/data/test-diff-filter/test14-0-report.txt: Likewise.
	* tests/data/test-diff-filter/test14-1-report.txt: Likewise.
	* tests/data/test-diff-filter/test15-0-report.txt: Likewise.
	* tests/data/test-diff-filter/test15-1-report.txt: Likewise.
	* tests/data/test-diff-filter/test16-report-2.txt: Likewise.
	* tests/data/test-diff-filter/test16-report.txt: Likewise.
	* tests/data/test-diff-filter/test17-0-report.txt: Likewise.
	* tests/data/test-diff-filter/test17-1-report.txt: Likewise.
	* tests/data/test-diff-filter/test2-report.txt: Likewise.
	* tests/data/test-diff-filter/test27-redundant-and-filtered-children-nodes-report-0.txt: Likewise.
	* tests/data/test-diff-filter/test27-redundant-and-filtered-children-nodes-report-1.txt: Likewise.
	* tests/data/test-diff-filter/test27-redundant-and-filtered-children-nodes-report-2.txt: Likewise.
	* tests/data/test-diff-filter/test28-redundant-and-filtered-children-nodes-report-0.txt: Likewise.
	* tests/data/test-diff-filter/test28-redundant-and-filtered-children-nodes-report-1.txt: Likewise.
	* tests/data/test-diff-filter/test29-finer-redundancy-marking-report-0.txt: Likewise.
	* tests/data/test-diff-filter/test3-report.txt: Likewise.
	* tests/data/test-diff-filter/test30-pr18904-rvalueref-report0.txt: Likewise.
	* tests/data/test-diff-filter/test30-pr18904-rvalueref-report1.txt: Likewise.
	* tests/data/test-diff-filter/test31-pr18535-libstdc++-report-0.txt: Likewise.
	* tests/data/test-diff-filter/test31-pr18535-libstdc++-report-1.txt: Likewise.
	* tests/data/test-diff-filter/test32-ppc64le-struct-change-report0.txt: Likewise.
	* tests/data/test-diff-filter/test35-pr18754-no-added-syms-report-0.txt: Likewise.
	* tests/data/test-diff-filter/test35-pr18754-no-added-syms-report-1.txt: Likewise.
	* tests/data/test-diff-filter/test37-report-0.txt: Likewise.
	* tests/data/test-diff-filter/test39/test39-report-0.txt: Likewise.
	* tests/data/test-diff-filter/test42-leaf-report-output-0.txt: Likewise.
	* tests/data/test-diff-filter/test6-report.txt: Likewise.
	* tests/data/test-diff-filter/test9-report.txt: Likewise.
	* tests/data/test-diff-pkg/dirpkg-1-report-1.txt: Likewise.
	* tests/data/test-diff-pkg/dirpkg-3-report-1.txt: Likewise.
	* tests/data/test-diff-pkg/dirpkg-3-report-2.txt: Likewise.
	* tests/data/test-diff-pkg/libICE-1.0.6-1.el6.x86_64.rpm--libICE-1.0.9-2.el7.x86_64.rpm-report-0.txt: Likewise.
	* tests/data/test-diff-pkg/libsigc++-2.0-0c2a_2.4.0-1_amd64--libsigc++-2.0-0v5_2.4.1-1ubuntu2_amd64-report-0.txt: Likewise.
	* tests/data/test-diff-pkg/spice-server-0.12.4-19.el7.x86_64-0.12.8-1.el7.x86_64-report-2.txt: Likewise.
	* tests/data/test-diff-pkg/symlink-dir-test1-report0.txt: Likewise.
	* tests/data/test-diff-pkg/tarpkg-0-report-0.txt: Likewise.
	* tests/data/test-diff-pkg/tarpkg-1-report-0.txt: Likewise.
	* tests/data/test-diff-pkg/tbb-4.1-9.20130314.fc22.x86_64--tbb-4.3-3.20141204.fc23.x86_64-report-0.txt: Likewise.
	* tests/data/test-diff-pkg/tbb-4.1-9.20130314.fc22.x86_64--tbb-4.3-3.20141204.fc23.x86_64-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-report-3.txt: Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-report-5.txt: Likewise.
	* tests/data/test-diff-suppr/test0-type-suppr-report-7.txt: Likewise.
	* tests/data/test-diff-suppr/test1-typedef-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test1-typedef-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test11-add-data-member-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test12-add-data-member-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test12-add-data-member-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test13-suppr-through-pointer-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test13-suppr-through-pointer-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test14-suppr-non-redundant-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test14-suppr-non-redundant-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test15-suppr-added-fn-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test15-suppr-added-fn-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test15-suppr-added-fn-report-5.txt: Likewise.
	* tests/data/test-diff-suppr/test16-suppr-removed-fn-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test16-suppr-removed-fn-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test17-suppr-added-var-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test17-suppr-added-var-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test17-suppr-added-var-report-5.txt: Likewise.
	* tests/data/test-diff-suppr/test18-suppr-removed-var-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test18-suppr-removed-var-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test18-suppr-removed-var-report-5.txt: Likewise.
	* tests/data/test-diff-suppr/test2-struct-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test23-alias-filter-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test23-alias-filter-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test24-soname-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test24-soname-report-10.txt: Likewise.
	* tests/data/test-diff-suppr/test24-soname-report-12.txt: Likewise.
	* tests/data/test-diff-suppr/test24-soname-report-14.txt: Likewise.
	* tests/data/test-diff-suppr/test24-soname-report-16.txt: Likewise.
	* tests/data/test-diff-suppr/test24-soname-report-4.txt: Likewise.
	* tests/data/test-diff-suppr/test25-typedef-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test26-loc-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test26-loc-suppr-report-3.txt: Likewise.
	* tests/data/test-diff-suppr/test29-soname-report-3.txt: Likewise.
	* tests/data/test-diff-suppr/test29-soname-report-6.txt: Likewise.
	* tests/data/test-diff-suppr/test29-soname-report-8.txt: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test3-struct-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test30-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test31-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test32-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test32-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test33-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test35-leaf-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test36-leaf-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test4-local-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test4-local-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-3.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-4.txt: Likewise.
	* tests/data/test-diff-suppr/test5-fn-suppr-report-5.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-0-1.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test6-fn-suppr-report-3.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-2.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-3.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-4.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-7.txt: Likewise.
	* tests/data/test-diff-suppr/test7-var-suppr-report-8.txt: Likewise.
	* tests/data/test-diff-suppr/test8-redundant-fn-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test8-redundant-fn-report-1.txt: Likewise.
	* tests/data/test-diff-suppr/test9-changed-parm-c-report-0.txt: Likewise.
	* tests/data/test-diff-suppr/test9-changed-parm-c-report-1.txt: Likewise.

Signed-off-by: Dodji Seketeli <dodji@redhat.com>