Revisit Necronomicon

Implement three new Necronomicon chapters relating to wards, and plug a potential error relating to Books of Secrets and out of range ovar1 values
Delete commented-out code
Revisiting Wards

Implementing the magic stave wards at last.

These wards are carved into wooden weapons. This commit includes all the code needed to do that, as well as the code governing the effects of the staves.

Only 4 out of the 6 staves are currently implemented. The others don't do anything and shouldn't be learnable.

Also removes the mysterious reference to "engraving" on a weapon to name it, since we have actual rules for that now. I guess now it begs the question how you know the name if it isn't writen on the object though...
Implementation of the Yellow Sign, for use with the Necronomicon.

This was left out of that commit.
Expand checks for stolen items to cover more cases.
Gods will sometimes grant wards. Crowning grants the Heptagram ward.
No Dwarven pirates
Amon's binding text
Binders start with food and a leather cloak.

The player binder was a peasent farmer. Prior to begining their journey, they collected what food they had, even butchering their livestock.
The player should start with no wards, not all wards.
Change enter Explore mode to switch to two weapon fighting, in prep for Junethack.
Minor tweaks to the database
drop commented code
Add parts of xlog patch that weren't uploaded (Oops)
Add placeholder binder pictures.
Fixes to the Pirate patch, courtesy of Ben Collver.
Making doward and doseal end immediatly if the player doesn't know any wards/seals.
Commenting out the Binder role ahead of Junethack