Fixes#179
The Valkyrie goal level has two drawbridges and one of them was set to
have 50:50 chance to be closed (raised). But 'random' for drawbridge
open/closed (or lowered/raised) state was always choosing open (lowered).
This fixes that and also changes that level to have the old settings
(southern open, northern 50:50) for 75% of the time and new settings
(both 50:50) for 25% of the time. So there's now a 12.5% chance that
both will be closed instead of both always being open (due to the bug
with handling random).
From a bug report, when ice on the Valkyrie
quest home level was melted and a boulder filled the resulting pool, that
pool was described as a moat. This was actually a terrain issue rather
than a formatting glitch, so instead of tweaking waterbody_name() with an
extra special case, extend the level compiler to allow specifying ice as
frozen pool instead of always being frozen moat. There's no provision
for having both types of ice on the same level, just a level-wide flag to
control which of the two applies for ice on that level.
This change has a side-effect for the V quest levels: once ice has
been melted, a second blast of fire will now boil away the pool and leave
a pit. The unfrozen water locations on the home level already behaved
that way (ie, they are pools rather than moats) so this should be ok. I
also added <Someone>'s suggestion to make one of the two drawbridges
on the goal level start in random state instead of always being open.
Add FOUNTAIN directives to the maps that just had '{' symbols.
Without them, the special level loader sets up those maps in a way
that prevents nethack from keeping the fountain counter accurately,
resulting in lack of fountain noises when they haven't been touched
yet and persistent noises after at least one of them has been dried
up. (It would be better to fix lev_comp's map handling code to do
this automatically.)
