Implemented "eachchange" event using the jQuery.event.special API

(bug 45604)
Converted the "eachchange" jQuery plug-in to a jQuery event implementation using the
jQuery.event.special API.

Change by H. Snater
Rebased to master
Implemented "eachchange" event using the jQuery.event.special API
Merge pull request #1 from wmde/bug45604

Implemented "eachchange" event using the jQuery.event.special API