Adds the following lua functions:
- nh.pushkey("x")
Pushes a key into the command queue. Support is spotty,
currently only the keys handled in rhack.
- nh.doturn()
Runs one turn of main loop, or if optional boolean param
is true, until g.multi == 0
- nh.monster_generation(false)
Disable monster generation, and kill off all monsters.
Adds a testmove.lua script to test hero movement. Currently
covers only hjklyubn and HJKLYUBN.
