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/Utils/LowerSwitch.cpp

@@ -23,6 +23,8 @@
 #include "Support/Debug.h"
 #include "Support/Statistic.h"
 
+namespace llvm {
+
 namespace {
   Statistic<> NumLowered("lowerswitch", "Number of SwitchInst's replaced");
 
@@ -224,3 +226,5 @@ void LowerSwitch::processSwitchInst(SwitchInst *SI) {
   // We are now done with the switch instruction, delete it.
   delete SI;
 }
+
+} // End llvm namespace