reverse operands when calling builtin isAssignableFrom
reverse operands when calling builtin isAssignableFrom

Our builtin function reverses the meanings of the operands relative to
the JNI method.

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