Mon Aug 3 11:53:57 CEST 2009

task.c as part of scheme.c ?

Maybe not: i probably am going to need different implementations
later.. Maybe stick to the shlib?  This however does need a tie into
the TinyScheme API.  Otoh, the task mechanism does call deep into the
private scheme implementation, so probably best to keep it.

First let's cleanup the current switch() statement.
OK: task.c is now in scheme.c