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/CXXExprEngine.cpp b/lib/GR/CXXExprEngine.cpp
index b1111c9..eee90f2 100644
--- a/lib/GR/CXXExprEngine.cpp
+++ b/lib/GR/CXXExprEngine.cpp
@@ -16,7 +16,7 @@
 #include "clang/AST/DeclCXX.h"
 
 using namespace clang;
-using namespace GR;
+using namespace ento;
 
 namespace {
 class CallExprWLItem {