Implement support for member pointers under the Microsoft C++ ABI in the
AST library.

This also adds infrastructure for supporting multiple C++ ABIs in the AST.

llvm-svn: 111117
diff --git a/clang/lib/CodeGen/MicrosoftCXXABI.cpp b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
index da0fdb6..cfc635a 100644
--- a/clang/lib/CodeGen/MicrosoftCXXABI.cpp
+++ b/clang/lib/CodeGen/MicrosoftCXXABI.cpp
@@ -110,7 +110,7 @@
                              llvm::SmallVectorImpl<char> &);
 };
 
-class MicrosoftCXXABI : public CXXABI {
+class MicrosoftCXXABI : public CGCXXABI {
   MicrosoftMangleContext MangleCtx;
 public:
   MicrosoftCXXABI(CodeGenModule &CGM)
@@ -1185,7 +1185,7 @@
   assert(false && "Can't yet mangle destructors!");
 }
 
-CXXABI *clang::CodeGen::CreateMicrosoftCXXABI(CodeGenModule &CGM) {
+CGCXXABI *clang::CodeGen::CreateMicrosoftCXXABI(CodeGenModule &CGM) {
   return new MicrosoftCXXABI(CGM);
 }