ci: Ignore builds for branches aimed at other CI services

Make appveyor ignore builds for /travis.*/ and vice versa. If you're
only testing a Windows change, building for OSX and Linux too is a bit
rude.

Signed-off-by: Adam Jackson <ajax@redhat.com>

test/scripts/build-travis-deps.sh

@@ -12,3 +12,9 @@ meson setup build/
 meson configure -Dprefix=$PREFIX build/
 ninja -C build/ install
 ninja -C build/ test
+
+status=$?
+
+cat build/meson-logs/testlog.txt
+
+exit $status

test/scripts/xvfb-piglit.sh

@@ -1,9 +1,9 @@
 #!/bin/sh
 
 # this times out on Travis, because the tests take too long.
-if test "x$TRAVIS_BUILD_DIR" != "x"; then
-    exit 77
-fi
+#if test "x$TRAVIS_BUILD_DIR" != "x"; then
+#    exit 77
+#fi
 
 export SERVER_COMMAND="$XSERVER_BUILDDIR/hw/vfb/Xvfb \
         -noreset \