- Added GOD2 and BUDDHA2 cheats.

- Ensures that not even telefrag damage can kill the player.
- Fixed: Players with NODAMAGE could still hurt and kill themselves via
voodoo dolls.
- Added: BUDDHA and FOILBUDDHA.

- Fixed: mugshot didn't take the god2 cheat into account.
- Follow-up of the previous commit.

- Cleaned up the DoDamage and DoKill functionality.
- Added DMSS_FOILBUDDHA and KILS_FOILBUDDHA.
- added a Buddha powerup
- made CheatKey and EasyKey vector graphics configurable through MAPINFO.