[Chimera-users] Togl patches?

Hi! I recently learned that Chimera has produced some patches to the Togl widget that allow it to work with Cocoa based Tk: http://plato.cgl.ucsf.edu/trac/chimera/browser/trunk/foreign/Togl Are these updates available under Togl's current license or are they restricted by the Chimera license? Thanks, CY