Check that we still have build orders for our attack plan. Temporarily fixes #2082 for A14.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13761 3db68df2-c116-0410-a063-a993310a9797
Added effects to athen_prytaneion

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13762 3db68df2-c116-0410-a063-a993310a9797
Cast Shadow flag enabled on this actor.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13763 3db68df2-c116-0410-a063-a993310a9797
Fixed some Corral errors.

Fixed some Persian building stuff.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13764 3db68df2-c116-0410-a063-a993310a9797
Fixed a couple tips.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13765 3db68df2-c116-0410-a063-a993310a9797
'Crop Rotation' tech for the Gallic Rotary Mill.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13766 3db68df2-c116-0410-a063-a993310a9797
fix whale altitude (no floating whales). See r13749.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13767 3db68df2-c116-0410-a063-a993310a9797
Merge remote-tracking branch 'remotes/trunk'
Merge branch 'master' of http://github.com/JoshuaJB/0ad into lobby