Binder does not allow for a blank selection of enum

[Dave Cheong]

This bug relates to the discussion found here:
http://groups.google.com/group/play-framework/browse_thread/thread/5f27d6cefc79f967

It is a proposal to change Binder.bindInternal() to distinguish the difference between submitting a blank enum choice and not submitting a value at all.

The suggested fix is:

             if (Enum.class.isAssignableFrom(clazz)) {
                 if (value == null) {
                     return MISSING;
                 }
                 else if (value.length == 0 || StringUtils.isEmpty(value[0])) {
                     return null;
                 }
                 return Enum.valueOf(clazz, value[0]);
             }

The problem is found on 1.0.2.1. Guillaume suggest the fix for 1.0.3.

thanks,
dave