Log Message:
The SquirrelMail Compatibility plugin provides a standard API for plugin
authors who need certain functionalities that may not be available in older
versions of SquirrelMail.  Also it makes it easier to upgrade plugins for
SM 1.4 compatibility.  SquirrelMail administrators only need to download this
plugin if any of the plugins they have require it.  This plugin has no
functionality in and of itself.