Adds ON_CLBN_CHKCHANGE to the message map for the ships and weapons lists so that hitting spacebar to change the checked/unchecked status of a ship or weapon also updates the availability count.
git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@11295 387891d4-d844-0410-90c0-e4c51a9137d3
Get-Damage-Caused SEXP and a couple of functions for counting the number of variables of a certain type.
Commit the new team loadout code and FRED changes to support it.