- Added bright flags to the scripted marines' BFG and railgun attacks.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4020 a95907f1-e10c-0410-b46f-9e587ccb1026
- Added a flag to A_M_Refire to ignore the actor's missile state, so the rocket marine will
  not continue to punch air if it starts attacking while its target is in melee range and
  then moves out of it.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4021 a95907f1-e10c-0410-b46f-9e587ccb1026
- Do not use the muzzle flash player sprites for the scripted marines' melee attacks.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4022 a95907f1-e10c-0410-b46f-9e587ccb1026
- Slow down the scripted marines' rocket attack and speed up the plasma attack to better reflect
  the speeds of the equivalent player weapons.

git-svn-id: http://mancubus.net/svn/hosted/zdoom/zdoom/trunk@4023 a95907f1-e10c-0410-b46f-9e587ccb1026