This pull request contains updates for UBI and UBIFS

UBI:
	- Use bitmap API to allocate bitmaps
	- New attach mode, disable_fm, to attach without fastmap
        - Fixes for various typos in comments

UBIFS:
	- Fix for a deadlock when setting xattrs for encrypted file
	- Fix for an assertion failures when truncating encrypted files
        - Fixes for various typos in comments
-----BEGIN PGP SIGNATURE-----
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=UVHq
-----END PGP SIGNATURE-----