If a hut could spawn neither a city nor a settler, give a consolation gold
prize rather than silently doing nothing.

Followup to gna patch #3895.

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@22843 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Remove extra line in path finding code, causing fueled units to stop at all
refuel points of their path.

Reported by Michael Srp

See gna bug #20786

git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@22846 a0f10bec-cc02-0410-94fc-a9cfff90b4cd
Consider all units that can take over a city occupying threat, instead
of just ground units.

Patch by Emmet Hikory <persia>

See bug #20785


git-svn-id: svn://svn.gna.org/svn/freeciv/trunk@22851 a0f10bec-cc02-0410-94fc-a9cfff90b4cd