Avoid dependency on uuid.h in MacOSXDYLD

[labath]

Summary

r241964 has added a dependency on uuid.h, which (on linux at least) necessitates instalation of a
new package. Since the only thing we need from that file is uuid_t (and this is already defined
in UuidCompatibility.h), we can avoid this dependency by making this include APPLE specific.
If in future, we need more from this library, we can revisit this decision.

source/Plugins/DynamicLoader/MacOSX-DYLD/DynamicLoaderMacOSXDYLD.cpp

 //===-- DynamicLoaderMacOSXDYLD.cpp -----------------------------*- C++ -*-===//
 //
 //                     The LLVM Compiler Infrastructure
 //
 // This file is distributed under the University of Illinois Open Source
 // License. See LICENSE.TXT for details.
 //
 //===----------------------------------------------------------------------===//
 
-#include <uuid/uuid.h>
-
 #include "lldb/Breakpoint/StoppointCallbackContext.h"
 #include "lldb/Core/DataBuffer.h"
 #include "lldb/Core/DataBufferHeap.h"
 #include "lldb/Core/Log.h"
 #include "lldb/Core/Module.h"
 #include "lldb/Core/ModuleSpec.h"
 #include "lldb/Core/PluginManager.h"
 #include "lldb/Core/Section.h"

 #include <stdio.h>
 #define DEBUG_PRINTF(fmt, ...) printf(fmt, ## __VA_ARGS__)
 #else
 #define DEBUG_PRINTF(fmt, ...)
 #endif
 
 #ifndef __APPLE__
 #include "Utility/UuidCompatibility.h"
+#else
+#include <uuid/uuid.h>
 #endif
 
 using namespace lldb;
 using namespace lldb_private;
 
 /// FIXME - The ObjC Runtime trampoline handler doesn't really belong here.
 /// I am putting it here so I can invoke it in the Trampoline code here, but
 /// it should be moved to the ObjC Runtime support when it is set up.