changed on(ISBLIND) -> is_blind()
on(ISLEVIT) -> is_levitating()
added is_confused()
added is_invisible()
moved unconfuse -> status_effects
moved unsee -> remove_true_seeing
sight -> cure_blindness
nohaste -> remove_hasted
come_down -> remove_tripping
land -> remove_levitating
fixed bug in identifying rings/wands
moved some durations
created scrolls.h
moved scr_info to scrolls.h
did some structuring
s/FALSE/false/g
s/TRUE/true/g