views_php_plugin_access does not save values - patch attached

Hi casey :)

Thank you for porting this module to D7.

I needed to work with views_php_plugin_access to provide custom Admin access to views. However, the values were not being saved. After some poking around at the code, and using the Role Access plugin (http://views.doc.logrus.com/classviews__plugin__access__role.html#d9bf6e...) as a jumping point, I found that the values werent being saved post-submit. I think its the way the form is built, and so it requires a simple options_submit addition to align these values correctly. Herewith a patch that I have tested, and works on my side.

Thanks,
Greg