K 10
svn:author
V 8
sveinung
K 8
svn:date
V 27
2015-10-28T01:43:25.804297Z
K 7
svn:log
V 295
civ2civ3: force establish trade route

I don't know what bardo, the civ2civ3 maintainer, had in mind when we
talked about this in patch #5995. Avoid a rule change for 2.6 compared to
2.5 for now. Forbid entering the marketplace when the unit legally can
establish a trade route.

See patch #6490
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