Merge "Have slang emit a warning on renderscript deprecation." am: 2326fcb8e4 am: c18239d6f4 am: ff27f0b69b

Original change: https://android-review.googlesource.com/c/platform/frameworks/compile/slang/+/1685186

Change-Id: I6fa7bd2df4de4ec7e0e452fb1ea46b7e5c36f296