* Uri.cs: Use UTF8 characters when escaping. Reduce paths. This

    * Uri.cs: Use UTF8 characters when escaping. Reduce paths. This
	method is taken from System.Web.Utils.UrlUtils.
	* UriBuilder.cs: Do not escape fragments or queries, but do a utf8
	switch on them. Do not prepend a "/" to Paths. Do not use
	IPEndPoint to determine if a port is valid, UriBuilder allows
	ports to be any	positive integer, IPEndPoint does not. Use the
	ToString () method for generate a uri in get_Uri. Only set the
	port in ToString () if it is greater then 0.

svn path=/trunk/mcs/; revision=22840