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/SymbolManager.cpp b/lib/GR/SymbolManager.cpp
index 6d078f4..7727138 100644
--- a/lib/GR/SymbolManager.cpp
+++ b/lib/GR/SymbolManager.cpp
@@ -18,7 +18,7 @@
 #include "llvm/Support/raw_ostream.h"
 
 using namespace clang;
-using namespace GR;
+using namespace ento;
 
 void SymExpr::dump() const {
   dumpToStream(llvm::errs());