Add an action to change the function of a subdocument. This is use for example to make an Address the default address of a person, but is used globally for all subdocuments whose ID have a special meaning.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@15949 20353a03-c40f-0410-a6d1-a30d3c3de9de