Add autolabor-artisans.lua
autolabor: Add a talent pool parameter.
autolabor: Document and improve the talent pool parameter.
autolabor: Fix compile on Windows.

VC10 wants an explicit return type for lambdas.
Merge branch 'autolabor-artisans' of https://github.com/pkdawson/dfhack into develop

Conflicts:
	NEWS