Bugfixes to Export as a result of resampling changes in v0.8.1.
Added third generation, simplified IEEE 1394 I/O via libiec61883.
(dv1394 is still available when libiec61883 is not detected at configure
step of build process. Also, one can force the usage of dv1394 rather
than libiec61883 by using configure --with-dv1394.)
NOTE: some build configure options have changed slightly:
Use --enable-quicktime instead of --with-quicktime.
Use --enable-hotplug-script-dir instead of --with-....
Use --enable-hotplug-usermap-dir instead of --with-....