Update prebuilt Clang to r365631c3 (9.0.9).

clang 9.0.9 (based on r365631c3) from build 7019983.

Bug: https://github.com/android/ndk/issues/1388
Test: N/A
Change-Id: Ic7cab7cbf24b2a54fc810a0bb5a683185abfcce3
(cherry picked from commit 109f6b1c0ff3c580a82e6a4c8193330e6b85cc43)
3012 files changed