Extend detection of compatible types to arrays

Extend detection of compatible types to arrays

	* include/abg-fwd.h (is_array_type): Renamed is_array_type_def()
	into this for consistency.
	* src/abg-comparison.cc (type_suppression::suppresses_diff):
	Adjust.
	* src/abg-dwarf-reader.cc (build_array_type): Remove useless code
	that was trying to read a DW_AT_byte_size attribute from the DIE
	of the array, but then wasn't doing anything with the value.  But
	then if the attribute was not present, the array type wouldn't be
	built.
	* src/abg-ir.cc (strip_typedef): Strip typedefs from sub-types of
	array types too.
	(is_array_type): Rename is_array_def() to this, for consistency.
	(var_decl::get_pretty_representation): Adjust.
	* tests/data/test-diff-filter/libtest24-compatible-vars-v0.so: New
	test input data.
	* tests/data/test-diff-filter/libtest24-compatible-vars-v1.so: Likewise.
	* tests/data/test-diff-filter/test24-compatible-vars-report-0.txt:
	Likewise.
	* tests/data/test-diff-filter/test24-compatible-vars-v0.c: Source
	code for the first binary above.
	* tests/data/test-diff-filter/test24-compatible-vars-v1.c: Source
	code for the second binary above.
	* tests/data/Makefile.am: Add the new test input data to source
	distribution.
	* tests/test-diff-filter.cc (in_out_specs): Add the new test input
	data to the list of input to run this test harness over.

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