CRM-12109 - Exclude git-footnote from tarballs

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* CRM-12109: Automatically append JIRA links to Git tickets
  http://issues.civicrm.org/jira/browse/CRM-12109
CRM-12109 - Call git-footnote in commit-msg hook

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* CRM-12109: Automatically append JIRA links to Git tickets
  http://issues.civicrm.org/jira/browse/CRM-12109
Merge pull request #263 from totten/jira-commit-msg

CRM-12109 - Call git-footnote in commit-msg hook