Match XFAIL_TESTS correctly with Solaris make. * lib/am/check.am [PARALLEL_TESTS]: VPATH rewriting may have changed test names, so srcdir needs to be taken into account explicitly when checking against the list of tests expected to fail. Fixes spurious FAILures from XFAIL_TESTS. Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>