I touched one thing in lustre_mds.h, and I was dismayed to see the

I touched one thing in lustre_mds.h, and I was dismayed to see the
entire source tree rebuild!

It took just a few minutes to remove a number of #includes which
violated all manner of abstraction boundary.  ericm assures me that I
have not broken anything major in liblustre.

Also, I moved a good chunk of inline functions into llite_internal.h
(which is where I secretly believe that most of lustre_lite.h will end up),
and renamed ll_ino2fid (which no longer takes an inode) to mdc_pack_fid.