Update RingAllegro - extensions/ringallegro/buildvc.bat - Build using Allegro 5.2.7.1
Update RingAllegro - extensions/ringallegro/buildvc.bat - Build using Allegro 5.2.7.1

ring-lang/ring,ring-lang/ring,ring-lang/ring,ring-lang/ring,ring-lang/ring,ring-lang/ring,ring-lang/ring,ring-lang/ring