bugs in addressbook copy contact function

[JohnDoh]

There appear to be 2 bugs in program/steps/addressbook/copy.inc. The contact copy function does not appear to be enabled in the basic UI at the moment but I would like to use this function as part of a plugin and so have attempted to debug the code.

Source/target check fails when using the default address book, I think this is just a data typing issue, using !== rather then != appears to fix it.

As I understand it the plugin hook documentation says that only one record will be passed when create_contact but when copying multiple contacts a recordset is passed. Splitting the contact ids and processing 1 at a time fixes this.

I attach a simple patch to fix these issues but there may be a better way to do it.

[alec]

Patch applied in [757d2bb9].