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/Target/TargetCacheInfo.h

@@ -16,6 +16,8 @@
 
 #include "Support/DataTypes.h"
 
+namespace llvm {
+
 class TargetMachine;
 
 struct TargetCacheInfo {
@@ -59,4 +61,6 @@ public:
   }
 };
 
+} // End llvm namespace
+
 #endif