Documentation: fix name of "cloud-init-per" command
Change SmartOS verb for availability zone (LP: #1249124)
Change SmartOS verb for availability zone

smartos host changed the name of 'region' to 'datacenter_name'
Fix bug lp:1248625 by reading /etc/mtab when mountinfo is not present.
Documentation: fix name of 'cloud-init-per' command
fix issue with get_mount_info on older kernels

This removes the requirement for /proc/PID/mountinfo, which was added in linux
kernel 2.6.26.  We could potentially re-visit this and read /proc/mounts rather
than /proc/mtab, but mtab proves effective in testing.
pep8 fix
fix 'make rpm' by removing 0.6.4 entry from ChangeLog (LP: #1241834)

0.6.4 was never released, but had entries in the ChangeLog.
The lack of a tag for 0.6.4 caused problems with 'make rpm'
open 0.7.5