Sanity check LOCAL_SRC_FILES_EXCLUDE
Sanity check LOCAL_SRC_FILES_EXCLUDE

Error out if there is a file listed in LOCAL_SRC_FILES_EXCLUDE but not in
LOCAL_SRC_FILES. This should catch typos or other mistakes that would
otherwise be missed.

Change-Id: Iaddf575a6ce35238998ac47b59591a7d05fbcd0d

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build