* backend/pixma_bjnp.c backend/pixma_bjnp.h
backend/pixma_bjnp_private.h backend/pixma_io_sanei.c:
Make bjnp protocol more resilient against packet loss and corruption
Changed timeout for all responses to be at least 10 seconds
Send all broadcasts for scanner detection 5 times
Made sure scanners are added to device list only once
Changed device-id for bjnp so it uses scanner hostname/ip-address
instead of mac address as this is more human friendly.
To make room, use scanner model instead of USB-id (which is bogus
for network scanners
* Pixma backend (pixma.c/pixma_common.c/pixma_io_sanei.c/pixma_bjnp.c)
bjnp tcp connection is now de-activated after initialization and
re-activated at start of scanning. If we do not do this, the scanner
closes its side of the connection after 30 secods of inactivity.
Added a maximum to the retry of slect calls when signals are
received
Added blocksize detection for tcp read_bulk call
Louis Lagendijk