* Purpose: assign a value to a template variable
* @link http://smarty.php.net/manual/en/language.custom.functions.php#LANGUAGE.FUNCTION.ASSIGN {assign}
* (Smarty online manual)
+ * @author Monte Ohrt <monte at ohrt dot com> (initial author)
+ * @author messju mohr <messju at lammfellpuschen dot de> (conversion to compiler function)
* @param string containing var-attribute and value-attribute
* @param Smarty_Compiler
*/