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

Move files and fix #includes


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@1400 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index 1bfdff9..2be1723 100644
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -21,8 +21,8 @@
 #include "llvm/iMemory.h"
 #include "llvm/iTerminators.h"
 #include "llvm/SymbolTable.h"
-#include "llvm/Support/STLExtras.h"
-#include "llvm/Support/StringExtras.h"
+#include "Support/StringExtras.h"
+#include "Support/STLExtras.h"
 #include <algorithm>
 #include <map>