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

llvm-svn: 9903
diff --git a/llvm/lib/ExecutionEngine/JIT/JIT.cpp b/llvm/lib/ExecutionEngine/JIT/JIT.cpp
index fedb6e4..61d9629 100644
--- a/llvm/lib/ExecutionEngine/JIT/JIT.cpp
+++ b/llvm/lib/ExecutionEngine/JIT/JIT.cpp
@@ -24,6 +24,8 @@
 #define NO_JITS_ENABLED
 #endif
 
+namespace llvm {
+
 namespace {
   enum ArchName { x86, Sparc };
 
@@ -118,3 +120,5 @@
   rv.IntVal = ExitCode;
   return rv;
 }
+
+} // End llvm namespace