A lot of major changes here.

- Achievement handling moved to the core
- Deleted unused code and gfx files. The gfx directory inside CraftMine
is now GONE, that was the last trace of anything from 1.4.7. Goodbye old
friend.
- Moved ItemCraftMine to the core (or created a new version in the core,
however you wish to look at it, its now in the core and not here)
- Moved a few helpers to the core
- CraftingHandler is now in the core.
- AMF has had its textures taken from the gfx folder and placed into its
own sprites! Its nearly back!
- At the moment, most of the items will not show up in the creative tab.
This is a bug that I never got round to fixing. This is because the
modid is never set for some items, so the CoreItem file cannot figure
out what creative tab it is supposed to be on.
- A few cleanup operations
- Moved the items that were going to get lost from the GFX folder into
their new texture files in the mods folder.