Merged xenclient-oe's pull request #27

[OXT-6] pseudo-xattr-support: remove invalid UNIQUE constraint
https://github.com/OpenXT/xenclient-oe/commit/ad489dd444cbe0a63c49efe3a654122df4036f73
Merged xenclient-oe's pull request #28

[OXT-19] tboot: measure all command line arguments (CVE-2014-5118)
https://github.com/OpenXT/xenclient-oe/pull/28
Unmasked util-linux from meta-selinux

This was originally masked because it appeared util-linux was having
SELinux enabled using --with-selinux when it should have been
--enable-selinux (per ArchWiki).  Turns out the compilation failure
being fixed was actually due to a patch needed for libmount and
--with-selinux was correct.
RDEPENDS fix

Accidentally used a = instead of a +=.  It was discovered when
heimdallr turned up missing in dom0.
Machine type folder rename

Missed a folder still using an old machine type name.
Fix lvm calls during init

Since we are in an initramfs and the directory for locks will be created
by populate-volatiles.sh, make sure lvm commands do not complain about
locking failures.
Remove ifplugd IMAGE_INSTALL line

Didn't work anyways so put it back in the syncvm image recipe.
Added missing functions to end of do_rootfs

Two functions, set_consoles and create_mounts, had been created but
not added to ROOTFS_POSTPROCESS_COMMAND.  Fixed this.
Vmlinuz support for compatibility

Some utilities were still expecting the kernel to be vmlinuz.  Since
the goal is to follow upstream as much as possible we are allowing
upstream to set the kernel name to bzImage.  Images will create a
symlink for vmlinuz => bzImage for compatibility.
SELinux patch for libmount

Added reference to SELinux patch for libmount to util-linux recipe.  The
actual patch file snuck into an earlier commit this morning.  Also removed
the enabling of SELinux as that is handled by meta-selinux now.
Changed startup order for urandom

Matched urandom's startup order to the orginal OpenXT.  Doubt this alters
any functionality.
Restored populate-volatile.sh

Got further in the boot process to see that as originally written it
was fine.  Returned variables to the way they were.
Changed startup order

Matching original OpenXT.
Adding missing mount points

Upstream base-files did not make all of the same mount points.  Adding the
missing ones into the append.