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

lib/Analysis/LoopInfo.cpp

@@ -21,6 +21,8 @@
 #include "Support/DepthFirstIterator.h"
 #include <algorithm>
 
+namespace llvm {
+
 static RegisterAnalysis<LoopInfo>
 X("loops", "Natural Loop Construction", true);
 
@@ -367,3 +369,5 @@ void Loop::changeExitBlock(BasicBlock *Old, BasicBlock *New) {
     I = std::find(I+1, ExitBlocks.end(), Old);
   }
 }
+
+} // End llvm namespace