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

llvm-svn: 9903
diff --git a/llvm/lib/Analysis/DataStructure/BottomUpClosure.cpp b/llvm/lib/Analysis/DataStructure/BottomUpClosure.cpp
index b4b2e48..66990fd 100644
--- a/llvm/lib/Analysis/DataStructure/BottomUpClosure.cpp
+++ b/llvm/lib/Analysis/DataStructure/BottomUpClosure.cpp
@@ -20,6 +20,8 @@
 #include "Support/Debug.h"
 #include "DSCallSiteIterator.h"
 
+namespace llvm {
+
 namespace {
   Statistic<> MaxSCC("budatastructure", "Maximum SCC Size in Call Graph");
   Statistic<> NumBUInlines("budatastructures", "Number of graphs inlined");
@@ -316,3 +318,4 @@
   //Graph.writeGraphToFile(std::cerr, "bu_" + F.getName());
 }
 
+} // End llvm namespace