add test-plo-no.stderr.exp-s390x-mvc in EXTRA_DIST.

Note: such missing files in EXTRA_DIST are found
by check_makefile_consistency.
However, to avoid blocking the tests, the return code
of check_makefile_consistency is ignored, but the errors
it detects are pages before the end of the make regtest output.

=> it might be a good idea to move the check_makefile_consistency
as the last step of regtest: target, and not ignore its return code.
This means:
   trials tests will not block make regtest
   such errors will be noticed.

For the moment, just fixed the missing file in EXTRA_DIST



git-svn-id: svn://svn.valgrind.org/valgrind/trunk@12455 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/memcheck/tests/Makefile.am b/memcheck/tests/Makefile.am
index 08d44e2..f61e99f 100644
--- a/memcheck/tests/Makefile.am
+++ b/memcheck/tests/Makefile.am
@@ -191,6 +191,7 @@
 	    test-plo-no.stderr.exp-le64 test-plo-no.stderr.exp-le32 \
 	test-plo-yes.vgtest test-plo-yes.stdout.exp \
 	    test-plo-yes.stderr.exp-le64 test-plo-yes.stderr.exp-le32 \
+	    test-plo-no.stderr.exp-s390x-mvc \
 	trivialleak.stderr.exp trivialleak.vgtest trivialleak.stderr.exp2 \
 	unit_libcbase.stderr.exp unit_libcbase.vgtest \
 	unit_oset.stderr.exp unit_oset.stdout.exp unit_oset.vgtest \