Add correspoding patch ready to go in clang's mainline.

git-svn-id: http://root.cern.ch/svn/root/trunk@47820 27541ba8-7e3a-0410-8455-c3a389f83636

patches/enable_ActOnEndOfTU_cling.diff

@@ -0,0 +1,38 @@
+Index: tools/clang/lib/Sema/Sema.cpp
+===================================================================
+--- tools/clang/lib/Sema/Sema.cpp	(revision 47812)
++++ tools/clang/lib/Sema/Sema.cpp	(working copy)
+@@ -572,7 +572,8 @@
+ 
+   if (TUKind == TU_Prefix) {
+     // Translation unit prefixes don't need any of the checking below.
+-    TUScope = 0;
++    if (!PP.isIncrementalProcessingEnabled())
++       TUScope = 0;
+     return;
+   }
+ 
+@@ -754,7 +755,8 @@
+   assert(ParsingInitForAutoVars.empty() &&
+          "Didn't unmark var as having its initializer parsed");
+ 
+-  TUScope = 0;
++  if (!PP.isIncrementalProcessingEnabled())
++     TUScope = 0;
+ }
+ 
+ 
+Index: tools/clang/lib/Parse/Parser.cpp
+===================================================================
+--- tools/clang/lib/Parse/Parser.cpp	(revision 47812)
++++ tools/clang/lib/Parse/Parser.cpp	(working copy)
+@@ -564,8 +564,7 @@
+     // Late template parsing can begin.
+     if (getLangOpts().DelayedTemplateParsing)
+       Actions.SetLateTemplateParser(LateTemplateParserCallback, this);
+-    if (!PP.isIncrementalProcessingEnabled())
+-      Actions.ActOnEndOfTranslationUnit();
++    Actions.ActOnEndOfTranslationUnit();
+     //else don't tell Sema that we ended parsing: more input might come.
+ 
+     return true;