Rename pow2 functions in __hash_table to reflect that they are hash specific

llvm-svn: 227866
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 9ba5c11b99fd25317ad99a8c4b6ec54e610fb9cf
1 file changed