POST value encoding problem

[Jen Hsien Huang]

Orion JSP/servlet has the POST problem, that many JSP/servlet engine have already fix 
long time ago.  I am amazing that Orion havent found this bug. 
If Orion use the java.net.URLDecoder to parse the Form data, the post valuse won't 
support i18n.
Make a new URLDecoder and parse data according the contentType of JSP page,  replace 
the java.net.URLDecoder could fix this bug.

The best jsp engine support i18n that I have seem is Resin of caucho.com, hope Orion 
can be as good as it.