Rename static analyzer namespace 'GR' to 'ento'.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@122492 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/GR/AggExprVisitor.cpp b/lib/GR/AggExprVisitor.cpp
index 4502298..af30c56 100644
--- a/lib/GR/AggExprVisitor.cpp
+++ b/lib/GR/AggExprVisitor.cpp
@@ -16,7 +16,7 @@
 #include "clang/AST/StmtVisitor.h"
 
 using namespace clang;
-using namespace GR;
+using namespace ento;
 
 namespace {
 /// AggExprVisitor is designed after AggExprEmitter of the CodeGen module.  It