provision 6.x-1.0-rc4

Fourth release candidate.

Key changes in 1.0-rc4

* There is now a ~/clients directory in which symlink are automatically created to allow easy access to all your client sites (#1115960: Moving a site between platforms causes confusion)
* A variable is now set in settings.php (aegir_api) to allow contrib modules to inspect what Aegir version they are dealing with, if any. The setting is removed on export, that is, if dbcloaking is off (#1027358: Set a variable in settings.php so that modules can check whether the site is in Aegir)
* We fixed a big regression where the mass migrate form stopped working in rc3 (#1111532: Mass Migrate fails in Aegir 1.0 RC3)
* The private directory of Drupal 7 is now properly protected (#1108810: Files in sites/example.org/private are accessible.)
* The Debian package has been tested over and over again and is now the prefered install method for people on Debian
* Consequently, install.sh has been removed and the manual install instructions have been revamped to be clearer, see this post for more information about the reasoning behind that change

Full release notes

http://community.aegirproject.org/node/544