Move "Unqualified lookup into dependent bases of class templates" Microsoft specific behavior from -fms-extensions to -fms-compatibility.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@144341 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaOverload.cpp b/lib/Sema/SemaOverload.cpp
index a8fdfcb..6977462 100644
--- a/lib/Sema/SemaOverload.cpp
+++ b/lib/Sema/SemaOverload.cpp
@@ -8705,7 +8705,7 @@
     // create a type dependent CallExpr. The goal is to postpone name lookup
     // to instantiation time to be able to search into type dependent base
     // classes.
-    if (getLangOptions().MicrosoftExt && CurContext->isDependentContext() && 
+    if (getLangOptions().MicrosoftMode && CurContext->isDependentContext() && 
         isa<CXXMethodDecl>(CurContext)) {
       CallExpr *CE = new (Context) CallExpr(Context, Fn, Args, NumArgs,
                                           Context.DependentTy, VK_RValue,