Bug 23533 - Accept '=' in ini property values

Bug 23533 - Accept '=' in ini property values

It appears that it's not possible to write a suppression specification
like the below at the moment:

  [suppress_file]
  label = Libabigail can't handle libgfortran.so (https://sourceware.org/bugzilla/show_bug.cgi?id=23492)
  file_name_regexp = libgfortran\\.so.*

This is because the ini parser won't accept the '=' character in the
URL as a valid character for ini property values.

So the entire [suppress_file] section is ignored by the suppression
specification engine.

This patch fixes that by making the equal character valid in property
values.

	* src/abg-ini.cc (char_is_delimiter): Take a new include_equal
	flag to control is the equal character should be considered as a
	delimiter or not.
	(char_is_property_value_char): Accept the equal character as a
	valid property value character.
	* tests/Makefile.am: Build a new runtestini test from the new
	tests/test-ini.cc source file.
	* tests/data/Makefile.am: Add the two new test inputs below to
	source distribution.
	* tests/data/test-ini/test01-equal-in-property-string.{abignore,
	abignore.expected}: New test inputs.
	* tests/test-ini.cc: New test harness.

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