files.cpp:
- fixed bug with null-terminator not being used for copy & size calculate
- added debug print to spit out raw data

receiver.cpp:
- slight changes to debug output in pst_rec_callback_filelist

sender.cpp:
- fixed bug in handle_files where wrong pointer was being checked on loop
- added minor debug output

udpipe_client/server.cpp
- just formatting changes and some minor comments