[MP] Removed leftover delayFreeVM references.
Init lastTime to 0 in Com_Frame.
Bring back ERR_NEED_CD handling just for conformity sake.
Init the jakey randomizer first thing in Com_Init.
[SP] Merge Com_Error catching code from MP and some other Com_Error functionality.
Init lastTime to 0 in Com_Frame.
Remove delayedFreeGame/DelayedUnloadGame references.