Seperate private and public $.extend

[anonymous]

Using $.extend like this:

$.fn.myPlugin(options) {
  var settings = {
    // defaults
  }
  $.extend(settings, options);

results in the jQuery object being extended when no options are passed. To simplify plugin writing, $.extend shouldn't do anything if the second parameter is null or undefined.

Changing this breaks code that already uses $.extend to extend jQuery itself.

[john]

Fixed in SVN rev 441.