* various .def scripts updates
* added cmd.def & getchatitem.def
* fixed: correctly check variable names in function "isset"
* fixed problems with loading scripts that cosist captalized IF/ENDIF/LOOP/ENDLOOP statments. now upper, lower and mixedcase work as they should.
-> 2 new script commands: "addevent,$eventname,$interval $script" and "removeevent $eventname". note that you cannot register 2 events under the same name!
* Fixed a minor bug with ${@myname} when called in an #onload block
* Added an example script file autobroadcast.def
