allow the @value to be used if present. This is useful when creating a list of...

allow the @value to be used if present. This is useful when creating a list of check boxes and bind it to List<String>

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@33719 71c3de6d-444a-0410-be80-ed276b4c234a