K 10
svn:author
V 6
persia
K 8
svn:date
V 27
2014-04-29T16:02:21.459647Z
K 7
svn:log
V 283
Use a unit class flag for airlifting

    Rather than restricting airlifts to ground units, provide a
unit class flag that allows ruleset authors to control which unit
classes are considered suitable for airlift.

Implementation suggestion by David Fernandez <bardo>

See patch #3871
END