Restores the old node API.

- Patch #77919 by chx, eaton, moshe, et al: enable programmaticaly submitted forms via the pull model.

See: http://drupal.org/node/64279#t-placeholders

- Patch #74326 by Eaton, Royboy, chx, et al: building $node->body with arrays like FAPI for viewing.

  Once again, we're paving the path for CCK in core ... :)

   1. "int(10)" -> "int", fixed typo in index name [pgsql change only]
   2. added defaults for uid and hostname (needed for both)
   3. postgres supports "DROP column" syntax
   4. added missing DELETEs for new table in poll_delete() and poll_update()