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/Support/Debug.cpp

@@ -26,6 +26,8 @@
 #include "Support/Statistic.h"
 #include "Support/CommandLine.h"
 
+namespace llvm {
+
 bool DebugFlag;  // DebugFlag - Exported boolean set by the -debug option
 
 namespace {
@@ -62,3 +64,5 @@ bool isCurrentDebugType(const char *DebugType) {
   return false;
 #endif
 }
+
+} // End llvm namespace