Log Message:
Update x2vnc to 1.4. Changes:

	* Included tkx2vnc, written by David Noble
	* Added hotkey functionality.
	* Added Macintosh mode.
	* Included a patch for -trimsel.
	* Implemented -scrollines
	* Implemented a grab timeout to allow xscreensaver to activate
	  gracefully.
	* Added -desktop option.
	* AltGr should now work properly.
	* Fixed cut'n'paste to work with XA_PRIMARY
	* Reversed mouse wheel direction (-reversewheel will get
	  old behaviour)
	* Added an autoconf script for easier compilation on
	  systems where xmkmf has not been configured properly.
	* Fixed -edgewidth to affect mouse pointer returns as well,
	  should fix some problems on Digital Unix.

Update provided by Michael Santos <mike@ethmoid.org> in PR 18526