Wraith

Adds boss monster in the likes of the Jabberwock and the Sludge crawler
Removed sundeath from wraiths
Fixed the missing value in savegame.h
Merge branch 'master' into Wraith
Rookie errors

Fixes three errors that I found
Tweaks the Spawn and behavior of the Wraith

It now spawns in the cult cabin first floor, also I gave it sundeath and
removed its ability to follow you so you could kill it by opening all
the windows of the main room to let light in
Remove needless redundancy
Mods can now have their own lua files.

Furthermore, added game.dofile function, which executes a lua file from the current mod directory.
Fixed unused parameter warnings.
SDL2 Alpha
Replacing tick based try_update.
Disabling cache to avoid SDL2 bugout.
Removing my fingerprint from makefile.
Fixing input lag (my fault).
cata_tiles update 1
cata_tiles update 2
Change all SDL_Surface to SDL_Texture

Had to rearrange initialization to make things work right.
Fix zoom + misc cleanup
Creating tool_armor.json and migrating mining helmet.
Unified TOOLARMOR_ON/TOOLARMOR_OFF iuse function that can handle many new possibilities.

A generic function to swap tool armor items. Items are defined as id:
item_spoo & item_spoo_on and the TOOLARMOR_ON/OFF functions can take
care of the rest. This means that some new forms of tool armor can be
defined entirely within json files.