Exposed constructor for generated code in case automatic calling not
supported on platform.

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.

Fixed python encode_byte to be unsigned.

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