More fixes for illegal memory accesses exposed by fuzzed binaries.

More fixes for illegal memory accesses exposed by fuzzed binaries.

	PR binutils/17512
	* peXXIgen.c (pe_print_pdata): Fail if the section's virtual size
	is larger than its real size.
	(rsrc_print_section): Fix off-by-one error checking for overflow.
	* pei-x86_64.c (pex64_bfd_print_pdata): Handle empty unwind
	sections.

	* dwarf.c (get_encoded_value): Warn and return if the encoded
	value is more than 64-bits long.
	(SAFE_BYTE_GET): Do not attempt to read more than 64-bits.
	(process_extended_line_op): Add more range checks.
	(decode_location_expression): Use the return value from
	display_block.  Add more range checks.
	(read_debug_line_header): Add range check.
	(display_debug_lines_raw): Add range checks.
	(display_debug_frames): Silently skip multiple zero terminators.
	Add range checks.
	(process_cu_tu_index): Check for non-existant or empty sections.
	Use SAFE_BYTE_GET instead of byte_get.