Adds JS implementations of Math.pow, exp, and log, by sanderd17, refs #1193.
Fixes #1990 (OOS caused by Math.pow).
Adds tests and documentation for Math functions.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13515 3db68df2-c116-0410-a063-a993310a9797


git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13516 3db68df2-c116-0410-a063-a993310a9797
Small boats move around quieter than large ships

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13518 3db68df2-c116-0410-a063-a993310a9797
Mauryan civ uses Omri's track. Cart sandbox map update

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@13519 3db68df2-c116-0410-a063-a993310a9797
Merge remote-tracking branch 'remotes/trunk'