Load bone names and use animation filenames for animation names

[s-ilent]

This pull request adds a few things. Gust games (at least) store bone names with the models in an Oid.bin file next to the model, so this adds functionality to load and apply them. Changes the animation loading function to use the animation filename instead of "GXA Animation X" for the animation name. Fixes a typo in the texture loading function so Vita files load.

[Joschuka]

Great additions, thanks a lot !