* configure configure.in: Added test for /dev/urandom and
index() in string.h or strings.h
* backend/net.c: Fixed SANE_NET_AUTHORIZE call handling
* doc/net.tex: Clarified definition of SANE_NET_AUTHORIZE, added
definition of MD5 authorization
* doc/sane.tex: Upgraded to version 1.0.2, changed definition of
SANE_MAX_USERNAME_LEN & SANE_MAX_PASSWORD_LEN to 128 chars
* doc/saned.man: added description of SANE_CONFIG_DIR/saned.users
* doc/scanimage.man: added description of ~/.sane/pass and
--accept-md5-only
* frontend/saned.c: implemented user authorization on a per backend
basis
* frontend/scanimage.c: fixed bug (option -b wasn't present)
implemented auth_callback
* include/sane/sane.h: changed definition of SANE_MAX_USERNAME_LEN &
SANE_MAX_PASSWORD_LEN to 128 chars
* lib/Makefile.in sanei/Makefile.in: updated Makefiles