main/ghostscript: should provide shared library libgs
It’s needed by imagemagick (see #309)
Looking at my archlinux install there are /usr/include/ghostscript/* and /usr/lib/libgs* files
I’m not sure if we want create libgs as a separate package be we surely want the /usr/include files in a separate ghostscript-dev package. (should be enough to add $pkgname-dev to subpackages for that)
maybe bump it to 8.71 while there too?
(from redmine: issue id 311, created on 2010-03-06, closed on 2010-05-13)