Support 64-bit Mac builds
Support 64-bit Mac builds

MaartenR/avian,MaartenR/avian,badlogic/avian,bgould/avian,getlantern/avian,minor-jason/avian,marcinolawski/avian,dicej/avian,getlantern/avian,bigfatbrowncat/avian-pack.avian,badlogic/avian,ucdseniordesign/avian,lwahlmeier/avian,lostdj/avian,joshuawarner32/avian,lwahlmeier/avian,joshuawarner32/avian,getlantern/avian,marcinolawski/avian,ucdseniordesign/avian,lostdj/avian,ucdseniordesign/avian,MaartenR/avian,getlantern/avian,MaartenR/avian,bigfatbrowncat/avian-pack.avian,ucdseniordesign/avian,dicej/avian,bgould/avian,joshuawarner32/avian,minor-jason/avian,minor-jason/avian,lostdj/avian,bigfatbrowncat/avian-pack.avian,lwahlmeier/avian,joshuawarner32/avian,dicej/avian,bigfatbrowncat/avian-pack.avian,marcinolawski/avian,marcinolawski/avian,minor-jason/avian,badlogic/avian,lostdj/avian,badlogic/avian,bgould/avian,dicej/avian,bgould/avian,lwahlmeier/avian