777: Add jetways type 2 support (http://wiki.flightgear.org/Animated_jetways#Animated_jetways_type_2). Sadly, a lot of airports still have these instead of the better type 1 AI jetways, so support by the 777 is welcome. (e.g. LFMN, LFPO...)
Authored by: isaakd 2019-01-01
Parent: [r3694]
Child: [r3696]
