Adding version numbers
Version numbers FTW
Drupal 7.20
Merge tag 'refs/tags/7.20' into drupal-7.20

7.20 release
Merge branch 'drupal-7.20'
Add hook_js_cache_alter().
Fixing comment typo.
Drupal 7.20 release. This contains security fixes and should be applied by all users.

For more information see: http://drupal.org/drupal-7.20
Merge in 7.20

Drops has the patch