Log Message:
Update to 1.26, set LICENSE.

1.26  Fri Jun 25 18:35:15 BST 2010
    - Document the 'debug' parameter
    - Croak if the user does not supply the 'types' parameter
    - Fix problems with SYNOPSIS and show example plugin usage
    - Don't warn inside plugin_del
    - Don't complain about invalid eat constants when debug mode is off
    - Add irc_plugin_error event

    ( All the above by Hinrik ).