CUPS port driver for OS/2 & eComStation 2011-02-16

This is a first attempt at a port driver for CUPS for OS/2 & eComStation, based heavily on the source code for LPR32 by Serge Sterck.

What is basically does is copy the print job to a temporary file, then call cupslpr.exe (same as lpr.exe in CUPS 1.3.7 but renamed to avoid confusion with the IBM lpr.exe) with the appropriate parameters.

Current limitations:
1) No status of whether the job works or not - it just disappears from the queue
2) ????

History:
2011-02-16      - implemented SplPdSet and SplPdQuery APIs
                - cupslpr.exe is now loaded from the path where TCP/IP is installed (even if not on the boot drive)
                - removed useless binary-mode checkbox from properties dialog (it did nothing anyway)
                - other minor cleanup
                - added bldlevel string
2010-07-20      - auto-generated CUPS port names now use normal numbering instead of base 4
2009-04-09  	- fixed bug causing initialization of default description to fail on port install
		- description is now set to the host/queue (like slpr)
		- eliminated annoying icon spam on port installation control (requires EAs)
		- improved icon, tidied up properties dialog 
		- Thanks to Alex Taylor for the above!
?2009-03-19? 	- added message dialog if cupslpr returns error
2008-06-28  	- ensured that all postscript files start with %!PS-Adobe-3.0 - fixes problems printing from Lucide
		- moved to IBM CPP v3.6.5

Installation:
1) Copy cupslpr.exe to \tcpip\bin on the drive where TCP/IP is installed, usually the boot drive (more specifically, it should be whichever directory inetd.exe is located in)
2) Copy cups.pdr to \os2\dll on the drive the OS is booted from
3) Install a new port in the printer object 'Output Port' tab, Install New port...
4) Enter the CUPS printer name as Queue Name
5) Once finished - click Save
6) Test printing with a postscript driver
7) Report feedback to paul@smedley.id.au or to the eCups mailing list!

Cheers,

Paul Smedley
10th April, 2009