Renderscript: rename .rs extension to .rscript

Reserve .rs extension for Rust.

Bug: 137365032
Test: make checkbuild
Test: cd frameworks/compile/slang/tests
    ./slang_tests.py
Test: atest CtsRenderscriptTestCases
Test: CtsRsCppTestCases

Exempt-From-Owner-Approval: Clean CP
Change-Id: I6e454f3c28c3014d0ac11a1cc3dd054e5ad2e98c
Merged-In: I6e454f3c28c3014d0ac11a1cc3dd054e5ad2e98c
(cherry picked from commit 81abf78dcfa140ea767f8c0b68072649d3c65bb9)
1 file changed
tree: 6a561f5379c73c4eb7ba64915284437755028320
  1. apps/
  2. build/
  3. util/
  4. .gitignore
  5. README