xen patchqueue: apply backport XSA 59, 104, 105, 106, 108 patches

OXT-9

Signed-off-by: Kevin Pearson <kevin.pearson.4@us.af.mil>
Signed-off-by: Chris Patterson <pattersonc@ainfosec.com>
Merge pull request #3 from cjp256/oxt-9-v3

[OXT-9] xen patchqueue: apply backport XSA 59, 104, 105, 106, 108 patches