Planex 0.19.0

• planex-build-mock: Pass --verbose to mock if --quiet is not supplied
  so that logs are produced inside docker with concurrent builds which
  use make's output --output-sync=target option
• planex-patchqueue: Check that pinned spec file contains the
  %autosetup -p1 macro which is needed to apply patch queue
• planex-clone: Improve handling of pins to branches, tags and commit
  hashes