Thu Aug 6 17:47:06 CEST 2009

Testing gc preemption

Seems to work.  There is a problem though: triggering GC outside of
the mainloop is not well-defined.

This basicly boils down to the fact that the GC managed memory is
owned by the interpreter.  The caller of _sc_run() has no business
using these data structures.

It's useful for testing though.  It's necessary to perform a GC before
doing any allocation to prevent corruption.