versioncontrol 5.x-1.0-beta1

Seems that I didn't release a stable snapshot for some time, so let's have one.
Commit notification mails are now implemented, and as this was the last major feature for getting on par with cvs.module, we're now arriving in the 1.0 beta series.

Changes since the last release:

• API change: versioncontrol_get_commit_directory_item() was renamed to versioncontrol_get_directory_item() and now also works for branch and tag operations.
• API addition (source compatible): versioncontrol_get_{branch,tag}_operations() got paging facilities like versioncontrol_get_commits() already had before.
• A new hook_versioncontrol.php file that documents all the hooks for API users. Also, improvements in the API documentation and a minor fix in the FakeVCS example code.
• Notification mails, plaintext output, an XHTML correctness fix, better themability, better CSS, and generally better code in Commit Log.
• The Commit Log pager limit can now be configured in admin/project/versioncontrol-settings.
• $form['#id'] values of the admin forms were renamed from vcs-* to versioncontrol-*, so that there's only one nomenclature.
• Fix the calculation and display of commit directories for commits that have "/" as common directory of all changed items.
• Status update mails in Account Status now contain the actual admin message instead of "Array".
• The repository is now always loaded into branch and tag operation arrays, as specified in the API documentation.
• The name of the authorization_method column in the database table now actually matches the queries in the module, which makes the whole thing *work* (!). Thanks to halkeye for obviously being the first real-life tester.

Please clear your menu cache manually in order to keep the "commitlog" page working. (Disabling and re-enabling any module should do.)