Rebol3 sources released

Looks like the nearly unthinkable has finally happened .. and just in time for Xmas.  Carl has now released the R3 sources on Github https://github.com/rebol/r3

There's going to be a flurry of activity as people try to port to their favorite platforms ... and hopefully someone will step up to lead this project since Carl lacks the time.  People have reported compiling the sources on OSX so far.