Update RELEASE_PROCESS
Update RELEASE_PROCESS

With the move to cmake and off appveyor all the Windows notes were incorrect.
Additionally, during review I found a number of other things that were no longer
correct.

dipinhora/ponyc,sgebbie/ponyc,ponylang/ponyc,sgebbie/ponyc,ponylang/ponyc,ponylang/ponyc,sgebbie/ponyc,sgebbie/ponyc,jemc/ponyc,jemc/ponyc,dipinhora/ponyc,jemc/ponyc,dipinhora/ponyc,sgebbie/ponyc