[AD] xf2pcx update

[Elias Pschernig <elias@xxxxxxxxxx>]

Hi,

I've had a modified version of xf2pcx lying around since I added the
euro character sometime last year, and right now I felt like making a
patch out of it (although xf2pcx isn't that useful anymore, given the
various font addons which exist for allegro, and support things like AA
rendering which xf2pcx doesn't). So, just ignore this if something more
important like 4.0.3 release is going on..

The modified version allows to use a 16-byte range instead of the fixed
characters 0x20-0xff like before (I just replaced XDrawText with
XrawText16 and so on), and the output PCX always uses a fixed grid now,
like with ttf2pcx, which makes it easier to post-process the pcx, and
also simplifies the code.

Included as well are some code changes, like using Allegro functions
directly where duplicates were used before for some reason, and the code
was reformatted with allegro/indent.pro.

The patch is attached. I included it in the make process, but I have
some doubt about the use of 'getopt' in the original xf2pcx - there's a
configure check for unistd.h, so maybe I should remove getopt and use
the same option parsing like in the non-x11 tools?

-- 
Elias Pschernig <elias@xxxxxxxxxx>

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