Windows bin/*.bat files missing in 9.0.0.0.rc1

[hathawad]

bin/gem.bat, bin/irb.bat, etc are all missing in the 64bit windows install for 9.0.0.0rc1

[enebo]

@mkristian Do you happen to know if you .bat generation changed in the last month or so?

[enebo]

This was done a few days ago and I verified that it is fixed in generated installers and bin dist.