First commit towards a linking move_file().
Now reads config['import']['link'], style fix and default setting added.
Style fixes.
Failing to link a file now throws a FilesystemError.
Merge branch 'master' of https://github.com/sampsyo/beets
Should have corrected some of the style checking errors.
Merge branch 'master' of https://github.com/sampsyo/beets
Merge branch 'master' of https://github.com/sampsyo/beets

Conflicts:
	beets/library.py
Merge Rovanion's symlink feature