passed to labcomm_writer_alloc any more.

reception of remote declaration. Corrected twoway/decimating.c
to take advantage of this.

New scheduler abstraction in place.

labcomm_internal_encode, this triggered lots of changes to handling of 
stacked writer allocation. Twoway example is not finished yet.

Start of adding GPLv3 licensensing.

Labcomm cleanup (still more to do)