pruned and grafted the refactored compiler from the metadata branch. Tests run, but code needs cleanup

passed to labcomm_writer_alloc any more.

Enabled stdio for VxWorks and fixed a potential bug where null was used as a buffer in the event of a failed memory allocation.

linker section tricks. Fallback is to manually call the init function of
each labcomm module.

[GNU] ld tricks (instead we rely on cpp tricks and some heuristics
for memory allocation) so we probably should rewrite labcomm compiler
to generate cleaner code for this use-case.

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)

Added dynamic macros and code for dynamic arrays indexed by signature
index.

Somewhat improved error handling in readers.

Changed reader/writer interface to simplify stacking (example will 
be forthcoming).

by referring to liblabcomm.a in liblabcomm.so).

fd_reader/writer more robust: no dependency on 'int *fd' to be live
while the reader/writer is in use).

labcomm_encoder/labcomm_decoder into labcomm.c

indirection in generated C-code.