Fix recent "tux3 mkfs" broken, and bugfixes

Hi,

Those patches fixes the recent broken things by atomic commit.  I hope
this patchset fixes all of those.

    - add tux_new_logmap() to create proper logmap (please review and check)
    - create ->logmap for some places
    - use defer btree root allocation for itable (with FIXME)

And also this cleans inode stuff up, and as usual, is including various
small bugfixes.

	static-http://userweb.kernel.org/~hirofumi/tux3/

Please review, and pull if ok.

Thanks.
--

-- 
OGAWA Hirofumi <hirofumi <at> mail.parknet.co.jp>