Property definitions

ios :: ui $ UITextField :: align=
	private fun align=(align: Float)
	in "ObjC" `{
		if (align == 0.5)
			self.textAlignment = NSTextAlignmentCenter;
		else if (align < 0.5)
			self.textAlignment = NSTextAlignmentLeft;
		else//if (align > 0.5)
			self.textAlignment = NSTextAlignmentRight;
	`}
lib/ios/ui/ui.nit:390,2--398,3