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

llvm-svn: 9903
diff --git a/llvm/lib/Analysis/DataStructure/DataStructureStats.cpp b/llvm/lib/Analysis/DataStructure/DataStructureStats.cpp
index 8d29848..3659c90 100644
--- a/llvm/lib/Analysis/DataStructure/DataStructureStats.cpp
+++ b/llvm/lib/Analysis/DataStructure/DataStructureStats.cpp
@@ -19,6 +19,8 @@
 #include "Support/Statistic.h"
 #include <vector>
 
+namespace llvm {
+
 namespace {
   Statistic<> TotalNumCallees("totalcallees",
                 "Total number of callee functions at all indirect call sites");
@@ -139,3 +141,5 @@
   visit(F);
   return true;
 }
+
+} // End llvm namespace