Add 'VisitEndAnalysis' callback to Checker class.  This callback is called by GRExprEngine
when the worklist algorithm has terminated.  This allows some checkers to do a post-analysis
phase after all paths have been analyzed.

llvm-svn: 106689
diff --git a/clang/lib/Checker/GRCoreEngine.cpp b/clang/lib/Checker/GRCoreEngine.cpp
index 23a87d3..36f3303 100644
--- a/clang/lib/Checker/GRCoreEngine.cpp
+++ b/clang/lib/Checker/GRCoreEngine.cpp
@@ -221,6 +221,7 @@
     }
   }
 
+  SubEngine.ProcessEndWorklist(WList->hasWork());
   return WList->hasWork();
 }