Update prebuilt Clang to r365631c2.

clang 9.0.8 (based on r365631c2) from build 6454773.

Change-Id: Id55462e3fc21434d3e86fa487888611ec3a3f43a
Bug: https://github.com/android/ndk/issues/1239
Test: N/A
(cherry picked from commit 68cbb42f0619b5e4504c32c4439b2c83afda0b24)
2936 files changed