Issue #1431634 by Tor Arne Thune: API docs cleanup for update module.
Issue #1619482 by mr.baileys: Fix up documentation for hook_update_N.
Issue #186: More robust PHP interpreter determination. Provide more information about test exceptions.
Merge pull request #155 from jenlampton/135-meta3-jen12

Issue #135: Docs updates backports from Drupal 7.
Issue #186: Update run-tests.sh for easier usage.
Merge pull request #172 from quicksketch/186/test_script_improvements

Issue #186: Update run-tests.sh for easier usage.