A bunch of fixes for cts tests in donut.

The specifics are as follows:
- Fix android.content.res.cts.ConfigTest (bug 2016026)
    - Add definition of custom test locale in make file
    - remove configuration resources for the default test configuration settings
    - add missing configurations
    - Port missing logic from ConfigTest from framework unit tests
- Comment out untestable logic in ActivityManagerTest#testProcessInErrorState
    (bug 2004043)
- Mark tests.api.java.io.FileTest#test_delete as a known failure (bug 1990816)
- Fix InstrumentationTest#sendPointerSync: Adjust coordinates of MotionEvent in
so its directed to activity under test instead of Status bar (bug 2004230)
    - also apply same fix to GestureDetector tests (bug 2019096)
- Disable failing PaintTest methods that rely on hardcoded values (bug 1934963)
- Remove asserts for constantPadding value when variablePadding is false from
AnimationDrawableTest#testInflate and DrawableContainerStateTest#
testAccessConstantPadding and StateListDrawableTest#testInflate (bug 2016862)
- Remove false assertions from GeocoderTest (bug 2017021)
- Add checks for presence of GPS provider to LocationManagerTest (bug 2017647)
- Remove null provider check from MediaStore_Audio_Playlists_MembersTest#testGetContentUri
(bug 2017132)
- Removing assertion that LoginFilter.getFilter is returning an instance of SpannableString
(bug 1937348)
- Turn off kerning when measuring text in TextUtilsTest (bug 2017456)
- Update DateUtilsTest#testGetAMPMString to test for lower case values (bug 2017467)
- Fix DateUtilsTest#testFormatMethod so it accepts both a leadign zero and no leading zero
for single digit month dates (bug 2017471)
- Remove NPE check in ViewTest#testGetLocationOnScreen (bug 2018903)
diff --git a/tests/Android.mk b/tests/Android.mk
index ec0d1db..1dcb569 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -24,6 +24,9 @@
 
 LOCAL_JAVA_LIBRARIES := android.test.runner
 
+# Resource unit tests use a private locale
+LOCAL_AAPT_FLAGS = -c xx_YY -c cs
+
 LOCAL_PACKAGE_NAME := CtsTestStubs
 
 include $(BUILD_PACKAGE)