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* CRM-12647: Customization export/import crashes on "&"
  http://issues.civicrm.org/jira/browse/CRM-12647

 * When outputting commands, display repo name instead of relative path
 * Add --repos option
 * Add hidden "push" action
 * Add disabled "merge-forward" action. (This was previously drafted but ultimately went with tools/scripts/merge-forward.)

CRM-12119 replaced demo_processor with new dummy_processor file which creates dummy (test) type payment processors and sets sample event and contribution pages to use those. Also links dummy processors to appropriate financial account.

The hook functions are called by multiple repos, and we may want to tweak the behavior within each repo. The GIT_CANONICAL_REPO_NAME provides a value like "civicrm-packages" or "civicrm-core".