Update clang for merge to LLVM 3.4.

Update TableGen rules:
-  AttrExprArgs
+  AttrIdentifierArg
+  AttrParsedAttrImpl
+  AttrTypeArg

Update config.h files.

Adjust Android.mk for added/removed files:

+  TransProtectedScope.cpp

-  DumpXML.cpp

+  Consumed.cpp

+  CodeGenABITypes.cpp

+  SanitizerArgs.cpp

+  AllocationDiagnostics.cpp
-  CommonBugCategories.cpp
+  IdenticalExprChecker.cpp

+  CommonBugCategories.cpp
-  SymbolManager.cpp
-  TextPathDiagnostics.cpp
+  SymbolManager.cpp

Change-Id: I73bea10e7e73e611f678bc5bf9935e26da63be17