Another gold dragon scales/mail issue, reported bu vultur-cadens:
reading a cursed scroll of light extinguishes carried light sources
except for wielded Sunsword and worn gold dragon scales/mail; there
was a special message for Sunsword (preventing the hero from being in
darkness) but no such message for gold dragon scales/mail. Replace
the special message with a more generic one applicable to both cases.
Also, implement the suggestion that cursed light degrade the amount
of light being emitted (which varies by bless/curse state) for those
two cases. Sunsword has a 75% chance to resist, gold dragon scales
25% chance. And add the inverse: blessed scroll of light might
increase the amount of light by improving their bless/curse state.
The resistance check applies here too and isn't inverted; Sunsword
is still fairly likely to resist.
Uncursed scroll of light, spell of light regardless of skill, zapped
or broken wand of light have so such effect.
Closes#666
e8341dc9d7