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.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169237 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Serialization/ASTReaderInternals.h b/lib/Serialization/ASTReaderInternals.h
index e5159e9..9f3f1a4 100644
--- a/lib/Serialization/ASTReaderInternals.h
+++ b/lib/Serialization/ASTReaderInternals.h
@@ -13,11 +13,12 @@
 #ifndef LLVM_CLANG_SERIALIZATION_ASTREADER_INTERNALS_H
 #define LLVM_CLANG_SERIALIZATION_ASTREADER_INTERNALS_H
 
-#include "clang/Basic/OnDiskHashTable.h"
+#include "ASTReaderInternals.h"
 #include "clang/AST/DeclarationName.h"
+#include "clang/Basic/OnDiskHashTable.h"
 #include "llvm/Support/Endian.h"
-#include <utility>
 #include <sys/stat.h>
+#include <utility>
 
 namespace clang {