update to apsfilter 7.1.0 - new design: use GNU configure alike script
(without the bloat) for creating different files (scripts, manpages,
handbook, Makefile). now paths are 100% matching. - create portable
Makefile across various platforms - manpage update, supported file types,
commandline options (lpr -C/-Z), docu fixes - some fixes in driver
(hl1250, bjc600/800)