use _ReadWriteBarrier intrinsic for MSVC build
use _ReadWriteBarrier intrinsic for MSVC build

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