Allow fonts to set/change special char indexes

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@11151 387891d4-d844-0410-90c0-e4c51a9137d3
Partial revert of r11145

A fake subsystem used as the firing point for fighter beams. It's
re-used for every fire point so the turret is supposed to only have 1
firepoint. i.e. energy consumption was already correctly calculated

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@11152 387891d4-d844-0410-90c0-e4c51a9137d3
Set 1024x768 32bit as default res on *nix

git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@11153 387891d4-d844-0410-90c0-e4c51a9137d3