sanei/sanei_tcp.c, sanie/sanei_udp.c: Improve portablity by
removing usage of MSG_WAITALL since not all platforms support
that (cygwin). Default is to be blocking anyways. Changed
usage of MSG_NOTWAIT to use fcntl() function as needed as well.
* configure.in, lib/Makefile.in, lib/strcasestr.c: Add internal
strcasestr() for platforms missing it (cygwin).
* pixma_common.c: My source match header prototype for picky
compilers (cygwin).
* backend/umax_pp_mid.c: Allow BACKEND_NAME to be filename
yet debug to be SANE_DEBUG_UMAX_PP to match man page.
Updated backends with EXTRA_* files to allow Makefile's
to always pass in BACKEND_NAME to be fixed to backend name
instead of filename; while still making sure that
SANE_DEBUG_${BACKEND}* exist as documented in man pages.
Add references to epson and epson2 man pages about
SANE_DEBUG_EPSONx_SCSI and _NET options.
Created an epson2 man page; based mostly on epson page.
* fixed color transfer for 1600P models
* fixed potential crash if dump file couldn't be opened for writing
* added ppdev device name handling
* added model override