[CForms]required validation don't work wiht flowscript in current cvs

[roy huang]

Hi all
    I just testing v2 and found this problem.
    Try http://localhost:8888/samples/blocks/forms/form1.flow or 
http://localhost:8888/samples/blocks/forms/v2/example ,leave the required field blank 
and submit,it goes through.It works before so I guess some changes make this. 
http://localhost:8888/samples/blocks/forms/form1 is ok.

    Roy Huang