ZF-11134: Need to support others schemes
Actualy it's impossible to add support of other scheme than http and https without duplicate Zend_Uri class, and so other subclasses because their constructors are protected and extends Zend_Uri.
I suggest to make a table likes :
protected $schemeClasses = array( 'http' => 'Zend_Uri_Http', 'https' => 'Zend_Uri_Http', );
And some methods like addSchemmeClass($scheme, $classname)