Replace StreamFsm and NinePConnection (QProcess-based) with NativeStreamer
which uses the new libollie9p streaming API (open/read_fid/close_fid).
All 9P operations now go through the native library:
- Chat, statewait, eventwait streams use threaded NativeStreamer
- Request/response operations use Lib9pClient directly
- No more subprocess spawning for any 9P operation
Remove ninepBin, ollie9pBin, serverAddr, run9p helper functions.
Remove streamfsm.cpp/h, ninepconnection.cpp/h from build.
Levi Neely