Put all LLVM code into the llvm namespace, as per bug 109.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@9903 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/CodeGen/SchedGraphCommon.h

@@ -18,6 +18,8 @@
 #include "llvm/Value.h"
 #include <vector>
 
+namespace llvm {
+
 class SchedGraphEdge;
 class SchedGraphNode;
 
@@ -217,4 +219,6 @@ public:
   ~SchedGraphCommon();
 };
 
+} // End llvm namespace
+
 #endif