Increased space in pflags (because we were getting VERY close to full...

Increased space in pflags (because we were getting VERY close to full capacity), which I will re-organise when this branch is closer to completion.

* PF_NIGHTSMODE is now CR_NIGHTSMODE as part of player->powers[pw_carry]. This is because it's mutually exclusive to every other "carry" type.
* PF_SUPERREADY is dead because it literally just checked for all 7 emeralds and 50 rings. That's it. You couldn't even appreciably alter its presence with Lua. That logic has been placed back in P_SuperReady.