Update Clang for merge to r187914.

Fixups related to OptParser.td moving into LLVM (from Clang).

Add libLLVMOption dependency.

Android.mk changes:
- Arg.cpp
- ArgList.cpp
- Option.cpp
- OptTable.cpp
- OptParserEmitter.cpp
- LambdaMangleContext.cpp
+ ASTTypeTraits.cpp
+ MangleNumberingContext.cpp
+ MicrosoftVBTables.cpp

Change-Id: I0aef80d90be9297cd1d5b5a08134cb6de2af4d2e
7 files changed