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/AsmParser/llvmAsmParser.y b/llvm/lib/AsmParser/llvmAsmParser.y
index aca9878..0f5c11e 100644
--- a/llvm/lib/AsmParser/llvmAsmParser.y
+++ b/llvm/lib/AsmParser/llvmAsmParser.y
@@ -21,8 +21,8 @@
 #include "llvm/DerivedTypes.h"
 #include "llvm/iTerminators.h"
 #include "llvm/iMemory.h"
-#include "llvm/Support/STLExtras.h"
-#include "llvm/Support/DepthFirstIterator.h"
+#include "Support/STLExtras.h"
+#include "Support/DepthFirstIterator.h"
 #include <list>
 #include <utility>            // Get definition of pair class
 #include <algorithm>