At this time, nglibisofs is able to output an image!! Note that communication
between writer and read thread is done via a pipe. That will be replaced by a
ring buffer in the near future.
Some aspects, such as better reporting of file bigger or smaller than
expected is needed, but all situations are handled propertly.
Note that this doesn't involve the RR reparent. It just ignore the files
that break iso restrictions (see ECMA-119, 220.127.116.11).