Log Message:
Update to 1.2.2:

Adam Jackson (5):
Massive ifdef cleanup, dropping a ton of unsupported platform code.
Drastically simplify TRANS_OPEN_MAX.
Remove DECNET support.
Finish removing OS/2 support
xtrans 1.2.2

Jeremy Huddleston (2):
Apple: Allow Xquartz to provide an additional fd to xtrans since
the dynamic addition code in the server isn't bulletproof yet.
Added a flag to enable "The OS already took care of securing this,
please skip checking xauth" for use with Apple launchd sockets.