Fix a bug with the foundation changes that caused buildings to be built too fast with multiple units.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13267 3db68df2-c116-0410-a063-a993310a9797
Fix my previous commit where if you had enough units buildings would never construct (rounding issue).

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13268 3db68df2-c116-0410-a063-a993310a9797
Merge remote-tracking branch 'remotes/trunk'