Write more sensible error message when failing to open PNM file.

DEVEL_2_0_BRANCH-1
Petter Reinholdtsen 2001-02-22 09:45:23 +00:00
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2001-02-22 Petter Reinholdtsen <pere@td.org.uit.no>
* backend/pnm.c: Write more sensible error message when failing to
open PNM file.
* include/sane/sanei_backend.h: Include <fcntl.h> before testing
for O_NONBLOCK and <limits.h> before testing for PATH_MAX to
increase the chances of getting the real value.