Sort the #include lines for unittests/...

I've tried to place sensible headers at the top as main-module headers.

llvm-svn: 169243
diff --git a/clang/unittests/Lex/PPConditionalDirectiveRecordTest.cpp b/clang/unittests/Lex/PPConditionalDirectiveRecordTest.cpp
index 21271f9..8db5c9a 100644
--- a/clang/unittests/Lex/PPConditionalDirectiveRecordTest.cpp
+++ b/clang/unittests/Lex/PPConditionalDirectiveRecordTest.cpp
@@ -7,21 +7,20 @@
 //
 //===----------------------------------------------------------------------===//
 
+#include "clang/Lex/PPConditionalDirectiveRecord.h"
 #include "clang/Basic/SourceManager.h"
-#include "clang/Basic/FileManager.h"
 #include "clang/Basic/Diagnostic.h"
 #include "clang/Basic/DiagnosticOptions.h"
+#include "clang/Basic/FileManager.h"
 #include "clang/Basic/LangOptions.h"
-#include "clang/Basic/TargetOptions.h"
 #include "clang/Basic/TargetInfo.h"
-#include "clang/Lex/ModuleLoader.h"
+#include "clang/Basic/TargetOptions.h"
 #include "clang/Lex/HeaderSearch.h"
 #include "clang/Lex/HeaderSearchOptions.h"
+#include "clang/Lex/ModuleLoader.h"
 #include "clang/Lex/Preprocessor.h"
 #include "clang/Lex/PreprocessorOptions.h"
-#include "clang/Lex/PPConditionalDirectiveRecord.h"
 #include "llvm/Config/config.h"
-
 #include "gtest/gtest.h"
 
 using namespace llvm;