Upgraded base upgrader class to that provided by civix v17.10.5.
Upgraded base upgrader class to that provided by civix v17.10.5.

Achieved by simply re-running: civix generate:upgrader.
Includes changes to extension version tracking conventions which allow
extensions to play more nicely in multidomain environments (see CRM-19252).

CiviCooP/org.civicoop.civirules