gprof: Add a simple test for gprof -l Verify that "gprof -l" works properly. * testsuite/Makefile.am (check_SCRIPTS): Add tst-gmon-gprof-l.sh. * testsuite/Makefile.in: Regenerated. * testsuite/tst-gmon-gprof-l.sh: New. Signed-off-by: H.J. Lu <hjl.tools@gmail.com>