Added feature #1934 by allowing script.charset to be set through an o…

…ptional 'scriptCharset' ajax option.

src/ajax.js

@@ -224,6 +224,8 @@ jQuery.extend({
 			var head = document.getElementsByTagName("head")[0];
 			var script = document.createElement("script");
 			script.src = s.url;
+			if (s.scriptCharset)
+				script.charset = s.scriptCharset;
 
 			// Handle Script loading
 			if ( !jsonp ) {