Fix initialization order to resolve warning.
Cleanup
Cleanup unused crap.
Initial fix.
Performance increase for GL1 models by placing the vertex arrays calls in
a compiled glList.
Cleanup
Add clear data call for static models.
Expand and redesign thread functions for join, start, and delete
capability.
Fix thread_join for show_message with the help of Josh.
Remove unused include.
Fix altnerate threads.
Fix asynch dialogs for thread_join
Cleanup
wait for josh
Cleanup and fix heisenbugger.
Remove unused variable.
Cleanup
Cleanup
Treat <> as != rather than error
Fixes sprite_add lower-left transparency

For non-color pixels this goes unnoticed, but without this change,
colored pixels of the sprite are not removed when matching the
lower-left pixel.