code style fixes:

- reordered includes to prevent accidental dependencies.
- moved arch specific files into their own folder (easier to include with cmake).
- renamed non-class files to reflect new code style (lower case with underscores).
- using full relative paths for includes (easier for understanding dependencies).
- using #pragma once instead of classic-style header guards.

src/lib/server/ClientProxy1_5.h

@@ -17,8 +17,8 @@
 
 #pragma once
 
-#include "CClientProxy1_4.h"
-#include "CStopwatch.h"
+#include "server/ClientProxy1_4.h"
+#include "base/Stopwatch.h"
 
 class CServer;
 class IEventQueue;