* Make testsuite fatal again.
* Add debian/patches/git_a11y_GTK_CSD_distcheck.patch
- cherry-pick commit from upstream to use client-side decorations
for a11y tests when running under distcheck.
* Drop debian/patches/reftest-known-fail.patch
* Stop tagging reftests as known fail since they should be fixed now:
- style-properties-nth-child.ui
- label-text-shadow-changes-modify-clip.ui
* Add debian/patches/no-accessibility-dump.patch
- skip this test until someone figures out how to reliably run it
always with CSD enabled, to match testsuite expected data.