[LINUX5250] Updates for testing

[Scott Klement <klemscot@xxxxxxxxxxxx>]

Hi,

I've merged James Rich's various changes to scs2pdf & other SCS functions
into the 0.16 branch in CVS.

I've done a bunch of bug fixes to the Win32 terminal object, and also
added a "dialog box" that appears if you don't specify a host in the
Win32 version.   (similar to that provided by xt5250, it just asks you
for a host and some other options)

Also, I've put a "test release" online at:
     http://klement.dstorm.net/tn5250-0.16.3w.tar.gz

This release will work for both unix & windows versions, but will only be
there temporarily until the 0.16.4 release is finally done.