[Xastir] GDAL and ImageMagik support for Xastir

[Bill Vodall]

I'm working on updating my "depencies" for the Xastir Cygwin package.

Lots has changed since I last looked.

Python and TCL/TK is now required?

From: http://cvs.sourceforge.net/viewcvs.py/*checkout*/xastir/xastir/README.win32?&view=auto

db4.2
libdb4.2
libdb4.2-devel
libgeotiff
libgeotiff-devel
libgeotiff1
libMagick-devel
libMagick6
gv
ImageMagick
libtool
libxml2-devel
nano
patch
pcre-devel
proj
python
rcs
unzip

I'm going to guess that I can build two packages.  One that's minimal we very little of
this and then include everyting in a full package.

Bill