merge change of MAIN branch to revision 1.93
add generated files.
follow mjpeg_logging API change, not pass "\n". eliminate some gcc warnings.
small fix logic of search frame to drop, last to release 1.6.
enable make targets: dist, distcheck, maintainer-clean.
Small fix to enable deinterlacing on interlaced inputs for lav2mpeg
General build fixes
Build fixes for libmovtar
Updated to 1.6.0-rc2
A script to make building the debs even easier