win implementation of threading and fixes for GC
Created attachment 3572 [details]
Comment on attachment 3572 [details]
I'm not going to enable multiple threads on Windows unless we know a reason
OS X that I don't expect on other platforms.
Although I could be convinced otherwise.
These problems should all be fixed, but I haven't tried compiling on Windows. Krzysztof, please let me
know if any of the changes don't work.