RUBY_ENGINE is not defined in ruby 1.8.6.
RUBY_ENGINE is not defined in ruby 1.8.6.

Signed-off-by: Steve Richert <9ce5770b3bb4b2a1d59be2d97e34379cd192299f@laserlemon.com>
bnadav/vestal_versions,houston/vestal_versions,laserlemon/vestal_versions,alexcrichton/vestal_versions,Leadformance/vestal_versions,rthais/vestal_versions,Skalar/vestal_versions,scottwillson/vestal_versions,robertleelittleiii/vestal_versions