Sort all of Clang's files under 'lib', and fix up the broken headers
uncovered.

This required manually correcting all of the incorrect main-module
headers I could find, and running the new llvm/utils/sort_includes.py
script over the files.

I also manually added quite a few missing headers that were uncovered by
shuffling the order or moving headers up to be main-module-headers.

llvm-svn: 169237
diff --git a/clang/lib/CodeGen/CGDebugInfo.h b/clang/lib/CodeGen/CGDebugInfo.h
index 99f29e8..cb9ce8b 100644
--- a/clang/lib/CodeGen/CGDebugInfo.h
+++ b/clang/lib/CodeGen/CGDebugInfo.h
@@ -14,16 +14,15 @@
 #ifndef CLANG_CODEGEN_CGDEBUGINFO_H
 #define CLANG_CODEGEN_CGDEBUGINFO_H
 
-#include "clang/AST/Type.h"
-#include "clang/AST/Expr.h"
-#include "clang/Basic/SourceLocation.h"
-#include "llvm/DebugInfo.h"
-#include "llvm/DIBuilder.h"
-#include "llvm/ADT/DenseMap.h"
-#include "llvm/Support/ValueHandle.h"
-#include "llvm/Support/Allocator.h"
-
 #include "CGBuilder.h"
+#include "clang/AST/Expr.h"
+#include "clang/AST/Type.h"
+#include "clang/Basic/SourceLocation.h"
+#include "llvm/ADT/DenseMap.h"
+#include "llvm/DIBuilder.h"
+#include "llvm/DebugInfo.h"
+#include "llvm/Support/Allocator.h"
+#include "llvm/Support/ValueHandle.h"
 
 namespace llvm {
   class MDNode;