Tar, pitch, and unknown materials are no longer in REACTION_CLASS:CORPSE
Give all major race itemcorpses appropriate prefixes (corpse -> orc corpse)

Also made that part of the raws look nicer.

My Little OCD, Spacing is Magic.
Orcs: Add all relevant tanning/studding/upgrade leather reactions.

Previously orcs had some of these, but not all. Some were previously
enabled, but had become disabled with name drift.
GH #48 - Resolved many missing reactions.

Functional changes:

* Orcs and Dwarves can now open moon arrow crates
* Orcish fountains can fill buckets
* Fixed missing CADBLIGHT poison for orcs

Errored reactions removed/resolved:

* Lamellar bone armour is really gone.
* Copy and diff items 127, 178 and 206 removed.
* No longer existant greenskin reaction removed from warlocks and goblins
  (They have their own race-dependent reactions)
* Removed reference to non-existant mojo crafts in orcs
  (they can only be created from research or rituals)
* Duplicate scarecrow/decoy reactions for orcs removed.
* BLOCK_BOULDER reaction removed. Dunno what that was.
* Admitted that the apothecarius no longer makes soap, nor casts
* Old and removed reactions burnt from the crematorium
* Fountains don't try to provide courage.