A small change to the device interface

"Igor V. Melichev" <[email protected]> Fri, 28 Jan 2005 22:19:29 +0300

Newsgroups	gmane.comp.printing.ghostscript.patches
Message-ID	<[email protected]>

The patch
http://ghostscript.com/pipermail/gs-cvs/2005-January/005196.html
defines a new mode pattern_manage__shading_area for pattern_manage.
If a device responds with 1, the shading algorithm passes the
shading coverage area with fill_path. Well, it's a tricky use of fill_path,
but we don't like to introduce another special function for this rare case.
Now only 1 device responds with 1 - it is a local thing pdf_lcvd_t in 
pdfwrite.

Igor.