Refactor short sword brand probability

Possibly the dagger brand probabilities should be combined with other
short sword probabilities because they're pretty close.
Refactor axe brand probabilities

As a minor simplification, hand axes can now have draining and holy
wrath brands like other axes.
Fix compilation
Make dagger brand probabilities add to exactly 100 (Yermak)
Delete less ghosts on halloween (PleasingFungus)
Remove traps from a lair vault (wheals).

These weren't in any of the vaults that were merged to form this vault,
so I have no idea why they're there now.
Remove "display_char = space: " from *glyphs.txt files

It caused problems with util/checkwhite and probably did nothing the
default mapping for space is ' '
Remove caustic wasps from Zot (Lasty)

Having the same monster in consecutive branches is odd, particularly
when other monsters in Zot are so distinct.
Add glass to hive_lemuel

This lets people who haven't read the .des files know they should dig.
Rename caustic wasps again, this time to caustic bees

Also, lower the MR to 80, and reduce the odds of them spawning anywhere
in dungeon, and prevent a band from ever spawning in Dungeon.

They're less likely to spawn in Dungeon than storm dragons, tengu
reavers, deep elf annihilators, and war gargoyles.
Tweak Irradiate

Increase base damage & decrease power scaling; about 10% more
damage at 50 power (just under two Fireballs worth of damage),
and about 10% less damage at 100 power. This is intended to make
it more appealing for transmuters, who are generally going to have
lower spellpower.

Also, make the malmutation guaranteed, rather than based on a
coinflip; the coinflip predates changes to monster malmutation,
and isn't needed now.
Actually tweak Irradiate

to the numbers I described in the previous commit

"oops"
Don't print doubleghost messages for no ghosts

Irrelevant now, but next halloween, oh boy...!
Disallow gaze attacks against invisible foes (#9114).

This logic got lost in turning these into spells instead of abilities.
New flayed ghost tile, happy Halloween
Evokable: the phantom mirror.

Single-use and stackable; it checks your evocation power against the
target's MR to create a clone of the target whose duration also varies
with evocation power.

Has a really preliminary tile; tt could use detailing from someone with
more artistic sense than I, or even a completely new tile.
Add glass to nicolae_straight_to_the_point (nicolae-)
Recolour draining clouds to not overlap with their nearby kin (simmarine)

Help, why does this produce a green/magenta/red colour instead of a magenta/red
Adjust phantom mirror evokable's dependence on target MR.

In particular, it's guaranteed to succeed, but the duration falls off
with target MR.

Yes, this succeeds against MAG_IMMUNE targets. This may need to change.
Hastily fix an incorrectly applied patch.

oops