Forwarded from newsgroup by <Someone> in February, 2005: non-cursed
unicorn horn fixes lost Str/Con/&c stats even when ring of sustain ability
is supposedly locking those at current value. This makes unicorn horn
honor the Fixed_abil intrinsic. The potion and spell of restore ability
still override that, so they now have potential for use even after player
has acquired a unihorn. Prayer also continues to override Fixed_abil.
Major prayer result to heal crippled strength now attempts to uncurse a
ring of sustain ability (or gloves or weapon covering it up--similar
situation as with cursed levitation). Minor prayer result to fix lost
stats resets those without attempting to do anything about Fixed_abil.
8d880dd143