This fixes a minor issue where directories in an archive name is not
stripped before matching for excluded libraries.  The fix was to call
lbasename to remove directories in a name like the GNU ld does.  The
test case is also updated.   This was tested on
x86_64-unknown-linux-gnu.

-Doug

2009-05-19  Doug Kwan  <dougkwan@google.com>

	* options.cc (General_options::check_excluded_libs): Strip
	off directories in archive name before matching like GNU ld does.
	* testsuite/Makefile.am (MOSTLYCLEANFILES,
	exclude_libs_test_DEPENDENCIES): Add alt/libexclude_libs_test_3.a
	(exclude_libs_test_LDFLAGS): Add linker option
	-Wl,--exclude-libs,libexclude_libs_test_3
	(exclude_libs_test_LADD): Add alt/libexclude_libs_test_3.a as
	an explicit archive without using -l.
	(alt/libexclude_libs_test_3.a): New make rule.
	* testsuite/Makefile.in: Regenerate.
	* testsuite/exclude_libs_test.c : Declare lib3_default().
	(main): Call it.
	* exclude_libs_test.sh: Add tests for alt/exclude_libs_test_3.a.
	* exclude_libs_test_3.c: New file.