Log message:
Update xnc to version 4.4.7 using most of the patches provided in PR pkg/14037
by former MAINTAINER Rui-Xiang Guo (rxg at ms25 dot url dot com dot tw).
Some modifications by me to adjust patches (which were for 4.4.6) to 4.4.7.

Changes from 4.4.6 to 4.4.7:
-Changed to a new method of detection pseudotty type, works well on more
 platforms including CygWin32.
-IVES command line viewer and editor has been renamed. 'vs' to 'iview', 'es' to
 'iedit'. This was made becouse older names conflict with another applications.
-New image library for using with IVES. Now XNC can view the following image
 formats:
  * GIF
  * JPG (with external or built in libjpeg)
  * PNG (with external or built in libpng)
  * TIF (with external libtiff)
  * BMP
  * PCX
  * PNM
  * PCD
  * LBM
  * XPM
-Fixed bug in running UPGRADE/INSTALL inside RPM archives.
-Fixed legal issues, added some copyrights
-Small bug fixes, as usual. Thanks to all who reported.

Changes from 4.4.5 to 4.4.6:
-Added new program 'xncloader' for faster xnc starting up.
-Fixed bug with wrong display rxvt terminal contents.
-Fixed small bug in FTP vfs.

Set MAINTAINER to myself as Riu no longer uses this pkg.  If there are any
volunteers who wish to take over, please feel free to change this.