python: expose automake bug#10995 * tests/python.test: Expose the bug in grepping tests. * tests/python-noinst.test: New functional test to expose the bug. * tests/list-of-tests.mk: Add it. * tests/Makefile.am (XFAIL_TESTS): Add the new test and the extended one. * THANKS: Update. Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>