Add debian/source/format file.

And set "3.0 (quilt)" so that the patch series is automatically applied by the
Launchpad builder.

This requires the deletion of `.bzr-builddeb`, which is in the upstream
Launchpad repository but not in the official distro tarball. Otherwise:

dpkg-source: info: local changes detected, the modified files are:
 mountall/.bzr-builddeb/default.conf
dpkg-source: error: aborting due to unexpected upstream changes
PPA 2.36.3-zfs3 release for precise.
Imported Upstream version 2.36.4
Add upstream-tag-format to the gbp.conf file.
Merge branch 'upstream/ubuntu/precise' into master/ubuntu/precise

Conflicts:
	debian/changelog
	src/mountall.c
Relax strict dependency handling.

Import @mk01's patch-queue:

* solves-dependencies-problem-endless-loop.patch
* readonly-and-atime-options-reflected-during-mount.patch
* no-filesystem-should-depend-on-mounting-swap-first.patch

Closes: dajhorn/pkg-zfs#63
Closes: zfsonlinux/mountall#1
Fix upstream-tag typo in gbp.conf file.