Sort the #include lines for tools/...

Again, tools are trickier to pick the main module header for than
library source files. I've started to follow the pattern of using
LLVMContext.h when it is included as a stub for program source files.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169252 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/opt/opt.cpp b/tools/opt/opt.cpp
index bac0d46..8e88e3a 100644
--- a/tools/opt/opt.cpp
+++ b/tools/opt/opt.cpp
@@ -13,39 +13,39 @@
 //===----------------------------------------------------------------------===//
 
 #include "llvm/LLVMContext.h"
-#include "llvm/DataLayout.h"
-#include "llvm/DebugInfo.h"
-#include "llvm/Module.h"
-#include "llvm/PassManager.h"
-#include "llvm/CallGraphSCCPass.h"
-#include "llvm/CodeGen/CommandFlags.h"
-#include "llvm/Bitcode/ReaderWriter.h"
-#include "llvm/Assembly/PrintModulePass.h"
-#include "llvm/Analysis/Verifier.h"
-#include "llvm/Analysis/LoopPass.h"
-#include "llvm/Analysis/RegionPass.h"
-#include "llvm/Analysis/CallGraph.h"
-#include "llvm/Target/TargetLibraryInfo.h"
-#include "llvm/Target/TargetMachine.h"
 #include "llvm/ADT/StringSet.h"
 #include "llvm/ADT/Triple.h"
-#include "llvm/Support/PassNameParser.h"
-#include "llvm/Support/Signals.h"
+#include "llvm/Analysis/CallGraph.h"
+#include "llvm/Analysis/LoopPass.h"
+#include "llvm/Analysis/RegionPass.h"
+#include "llvm/Analysis/Verifier.h"
+#include "llvm/Assembly/PrintModulePass.h"
+#include "llvm/Bitcode/ReaderWriter.h"
+#include "llvm/CallGraphSCCPass.h"
+#include "llvm/CodeGen/CommandFlags.h"
+#include "llvm/DataLayout.h"
+#include "llvm/DebugInfo.h"
+#include "llvm/LinkAllPasses.h"
+#include "llvm/LinkAllVMCore.h"
+#include "llvm/MC/SubtargetFeature.h"
+#include "llvm/Module.h"
+#include "llvm/PassManager.h"
 #include "llvm/Support/Debug.h"
 #include "llvm/Support/IRReader.h"
 #include "llvm/Support/ManagedStatic.h"
+#include "llvm/Support/PassNameParser.h"
 #include "llvm/Support/PluginLoader.h"
 #include "llvm/Support/PrettyStackTrace.h"
+#include "llvm/Support/Signals.h"
 #include "llvm/Support/SystemUtils.h"
 #include "llvm/Support/TargetRegistry.h"
-#include "llvm/Support/ToolOutputFile.h"
 #include "llvm/Support/TargetSelect.h"
-#include "llvm/MC/SubtargetFeature.h"
-#include "llvm/LinkAllPasses.h"
-#include "llvm/LinkAllVMCore.h"
+#include "llvm/Support/ToolOutputFile.h"
+#include "llvm/Target/TargetLibraryInfo.h"
+#include "llvm/Target/TargetMachine.h"
 #include "llvm/Transforms/IPO/PassManagerBuilder.h"
-#include <memory>
 #include <algorithm>
+#include <memory>
 using namespace llvm;
 
 // The OptimizationList is automatically populated with registered Passes by the