* backend/mustek_pp.c, backend/mustek_pp.conf, sanei/sanei_pa4s2.c,
include/sane/sanei_pa4s2.h, doc/sane-mustek_pp.man: added global
option "no_epp" to work around a known bug in the linux parport
code.
* include/sane/sanei_pa4s2.h, sanei/sanei_pa4s2.c: New sanei_pa4s2
version supporting both raw IO and libieee1284. If you don't
have libieee1284 installed, you need to enable raw IO when
running configure