mr-1.20180726-bp155.2.9

- update to 1.20180726:
  * Mitigate vulns caused by git code execution (CVE-2018-7032)
  * Migrate from ack-grep to ack
  * More reliable output supervision
  * Improve the status output for CVS
  * Improve the git-cvs extension
  * Allow prepending commands to existing commands
  * Allow for fallback to default commands
  * Add support for caching command output
  * Add shell extension to maintain a repo status cache
  * Add graph, remote, upgrade extensions
  * git registration improvements
  * webcheckout: prefer https transport

- Wrap and trim description

- initial build for version 1.20170129