Rename LangOptions::Microsoft to LangOptions::MicrosoftExt to make it clear that this flag must be used only for Microsoft extensions and not emulation; to avoid confusion with the new LangOptions::MicrosoftMode flag. 

Many of the code now under LangOptions::MicrosoftExt will eventually be moved under the LangOptions::MicrosoftMode flag.

llvm-svn: 139987
diff --git a/clang/lib/Sema/SemaAccess.cpp b/clang/lib/Sema/SemaAccess.cpp
index abea1ba..21d120a 100644
--- a/clang/lib/Sema/SemaAccess.cpp
+++ b/clang/lib/Sema/SemaAccess.cpp
@@ -1273,7 +1273,7 @@
                                          AccessTarget &Entity) {
   assert(Entity.getAccess() != AS_public && "called for public access!");
 
-  if (S.getLangOptions().Microsoft &&
+  if (S.getLangOptions().MicrosoftExt &&
       IsMicrosoftUsingDeclarationAccessBug(S, Loc, Entity))
     return AR_accessible;