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/net/TCPSocketFactory.cpp

@@ -16,9 +16,10 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include "CTCPSocketFactory.h"
-#include "CTCPSocket.h"
-#include "CTCPListenSocket.h"
+#include "net/TCPSocketFactory.h"
+
+#include "net/TCPSocket.h"
+#include "net/TCPListenSocket.h"
 
 //
 // CTCPSocketFactory