This change updates the kernel patches with the patches used by Proxmox.
Furthermore, we split the patches from Proxmox and Ubuntu, so that we
don't have to re-order them.
This change fixes the AppArmor incompatibility issues with the stock
Proxmox kernel. Since the stock kernel includes some patches from
Ubuntu, its AppArmor feature set is incompatible with the one offered by
this project.
We address this by also including these patches in our build, so users
do not need to manually intervene to update the apparmor_parser
configuration.
This change updates the build process to directly build the kernel from
upstream sources, as opposed to requiring the Proxmox zfsonlinux
repository to build the patched sources.
