changes:
* NetBSD patches integrated
* improvements to the module system
* new interfaces
basically numerous changes, see plt/notes/mzscheme in the source directory
compiler included. Uses the boehm garbage collector.
A big thanks goes to all who made devel/boehm-gc available. Modifying
patches for a specific use is much easier than reinventing them!
Note: I've marked this as i386-only, since it acted a little flacky on
alpha and sparc. In theory support for at least those platforms supported
by the garbage collector is possible. You are welcome to try.
