Merge remote-tracking branch 'aosp/upstream-19.0' into aosp/master

This updates the aosp/master branch to include the
mesa-19.0.3 release

Change-Id: Ia5891ba6a2fe94bc9c43df752ee8d160a0ef8ddd
Signed-off-by: John Stultz <john.stultz@linaro.org>