Fix skeletal frog prince ribbit (mattybee)

With some ugly hacks. :(

Better solutions welcomed
Remove Dowsing from the deck of battle (hangedman).
Remove the Metamorphosis card (hangedman).

"Metamorphosis is bad for most characters due to unarmed focus. At the
very least, most characters really don't appreciate spider form or blade
hands when drawing randomly. You can cancel it, which means you've used
up two turns and a card for nothing."

There are some ideas for improvement, but for now, no point in torturing
players (especially ones who don't realise the quite hidden fact that it
was cancellable).
Simplify.
Remove some #ifdef WIZARDs.

WIZARD is set to true by default; perhaps these could have been changed
to be if (wizard), but are we _really_ concerned about an info leak?
Especially if it makes bug reports less clear?
Make decks evokable from inventory.

<LinleyH> dpeg: do you still have to wield cards to use them?
<LinleyH> dpeg: that was a mistake.

Needing to wield made decks quite a bit less attractive for non-Nem
characters, and for Nem ones, made drawing a card 3 keypresses instead
of 2. There was the MP cost, but in practice it mattered very little.
Remove Draw One.

Since it's now useless.
Remove Peek at Two.

In the past 4 new Nemelex wins, it was used... 4 times. This isn't
surprising; Nemelex already gives enough ways to make a deck more
predictable and less dangerous, and one that prevents you from using the
more powerful ones is only going to be useful if it has a vastly greater
utility.

The fact that it was instant was quite possibly not noticed, and it does
lead to an interesting idea: in an emergency, peeking so that you know
what this deck will get you into. But Triple Draw is generally better for
that, unless you have 3 decks to spare to peek at in succession (and at
that point the piety cost would, I assume, exceed Triple Draw's).

More importantly, the other abilities are _fun_, and preventing you from
using them just feels like it's spoiling that. Deal Four, for example,
wasn't used much more than Peek at Two, but it's an iconic ability that
feels different every time.
Fix compilation.

And a warning.
skills2.cc is the dumbest thing
clean up header inclusions
script to remove unused headers
remove some unnecessary header inclusions
Add sacrifice-data.h to the MSVC project.
Add caustic wasps

Caustic wasps are intended to add a top-tier fast, pack threat to
depths analagous to killer bees in early Dungeon. In place of stacking
poison, they stack corrosion via acid.

The goal is to create in Depths the sorts of interesting situations
killer bees create in Dungeon, and also to provide another type of
top-tier threat in Depths.

Tile is a placeholder.
Color caustic wasps in tiles.
syscalls.h should also have not been removed
restore another header
restore another header
Improve caustic wasp save compatibility