Update Lustre Documentation
Add ZVOL swap section
Refresh pages for 0.6.0-rc7

This includes removing the old 0.5.x versions from the download
sections since they are now very stable.  Additionally, I've moved
some of the caviots in to the FAQ.  While I don't want to tag it
stable just yet we're in pretty good shape.
Update FAQ formatting

Just for consistency update the FAQ to use the same style as the
rest of the pages.
Fix typo
Refresh buildbot mirror
Remove buildbot links

My hunch is that the large number of cached builtbot pages
is causing the Github page updates to fail.  To see if that's
the case I'm removing the buildbot links.
Refresh pages for 0.6.0-rc8
Add LUG2012 talk to docs
Remove specific rc suffix
FAQ update for Ubuntu PPA and mountall changes.

Delete instructions for editing the /etc/default/zfs file on Ubuntu.
Running `zfs mount -a` during system start is unreliable, especially
on recent releases like Oneiric and Precise.

The sysv /etc/init.d/zfs method of mounting ZFS at system start is
deprecated for PPA installations because faster hardware and better
upstart parallelism are causing more race errors.

Design choices in upstart make event dependencies unfulfillable by
by ZoL if it is separate from mountall, so using the enhanced
mountall package that recognizes ZFS should be encouraged.
Add ZFS-8000-5E and ZFS-8000-HC messages.

These two files were missing from the first Sun documentation scrape
but later recovered by Illumos:

  http://www.illumos.org/msg/ZFS-8000-5E
  http://www.illumos.org/msg/ZFS-8000-HC

Copy these files to the ZoL web site, but disable the style sheet and
change illumos.org to zfsonlinux.org in the URL.
Update boot/root section
Add spl/zfs-0.6.0-rc9
Update faq

* Add some text to the 64-bit section.
* Update list of regularly tested platforms.
* Fix several spelling errors.
Update the Lustre Orion instructions

Update the Lustre Orion build instructions to be simpler.  The
major changes include.

1) Point people at the Github download section so they are only
   using tagged releases which we have verified at Livermore.
   More advanced sites can still build from Git directly.

2) Disable ldiskfs support by default.  It requires a patched
   kernel and that lies outside the scope of what we want to cover
   here.  This allows for more people to test the code simply
   using their stock kernel.

3) Removing remaining ldiskfs/ldiskfsprogs documentation.  As
   mentioned above that's outside our scope.

4) Simplify the webpages and provide just enough of the basic
   information to get people going.
Add rc10 Release

Restructure the front page to allow for posting of Source RPMs and DKMS
packages for each release.
Fix typo

Thanks to Nathan Weeks for spotting and reporting this.
Type RHEL 2.x -> RHEL 6.x
Remove ZIL reference

At the moment Lustre does not use the ZIL device, although in the
longer term it may add support for this.