move library-specific diagnostic headers into library private dirs.  Reduce
redundant #includes.  Patch by Anders Johnsen!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@63271 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Parse/ParseTentative.cpp b/lib/Parse/ParseTentative.cpp
index 5b242d8..445dd8b 100644
--- a/lib/Parse/ParseTentative.cpp
+++ b/lib/Parse/ParseTentative.cpp
@@ -13,7 +13,7 @@
 //===----------------------------------------------------------------------===//
 
 #include "clang/Parse/Parser.h"
-#include "clang/Basic/DiagnosticParse.h"
+#include "clang/Parse/ParseDiagnostic.h"
 using namespace clang;
 
 /// isCXXDeclarationStatement - C++-specialized function that disambiguates