Fix said tests for UnitAI.
Hopefully fix#647 too.
Document HFSM interface a bit.
Add Engine.DumpSimState() console command for debugging.
This was SVN commit r8681.
Giant merge from
http://svn.wildfiregames.com/hg-source/file/5fb522019d5e
Infrastructure is largely complete, gameplay is largely missing
Disabled by default; use command-line flag "-sim2"
(Second attempt at commit...)
This was SVN commit r7259.