Create a new #include "Support/..." directory structure to move things
from "llvm/Support/..." that are not llvm dependant.

Move files and fix #includes

llvm-svn: 1400
diff --git a/llvm/lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp b/llvm/lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp
index 32201be..e981a86 100644
--- a/llvm/lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp
+++ b/llvm/lib/Analysis/LiveVar/FunctionLiveVarInfo.cpp
@@ -11,7 +11,7 @@
 
 #include "llvm/Analysis/LiveVar/MethodLiveVarInfo.h"
 #include "llvm/CodeGen/MachineInstr.h"
-#include "llvm/Support/PostOrderIterator.h"
+#include "Support/PostOrderIterator.h"
 
 
 /************************** Constructor/Destructor ***************************/