Split out a header to hold APIs meant for the Sema implementation from Sema.h.
Clients of Sema don't need to know (for example) the list of diagnostics we
support.

llvm-svn: 112093
diff --git a/clang/lib/Sema/SemaTemplateInstantiate.cpp b/clang/lib/Sema/SemaTemplateInstantiate.cpp
index 0458413..024060f 100644
--- a/clang/lib/Sema/SemaTemplateInstantiate.cpp
+++ b/clang/lib/Sema/SemaTemplateInstantiate.cpp
@@ -10,7 +10,7 @@
 //
 //===----------------------------------------------------------------------===/
 
-#include "clang/Sema/Sema.h"
+#include "clang/Sema/SemaInternal.h"
 #include "TreeTransform.h"
 #include "clang/Sema/DeclSpec.h"
 #include "clang/Sema/Lookup.h"