Viewfield for 5.0

Thanks to eaton, webchick, alex_b, yched, and stefano73 for helping get viewfield ready for Drupal 5.0.

This release is basically a compatibility release. Some changes to the implementation:
1. More reliance on the views formatters (as seems to be the norm for CCK fields now) for formatting regular node views.
2. The full node formatter is now the "default". This may break some existing views. It's worth the pain.
3. Added paging as per stefano73/alex_b's work. Relatively untested, but it looks good so far. (Thanks!)

Watch http://drupal.org/node/100971 for further updates on viewfield's future.