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/Transforms/Hello/Hello.cpp

@@ -15,6 +15,8 @@
 #include "llvm/Pass.h"
 #include "llvm/Function.h"
 
+namespace llvm {
+
 namespace {
   // Hello - The first implementation, without getAnalysisUsage.
   struct Hello : public FunctionPass {
@@ -39,3 +41,5 @@ namespace {
   }; 
   RegisterOpt<Hello2> Y("hello2", "Hello World Pass (with getAnalysisUsage implemented)");
 }
+
+} // End llvm namespace