* Added a 'FEEDS.CHANNEL_AUTHOR_IS_DEFAULT' field to the database.
* Incremented the database version to 332.
* Added 'RDFeed::channelAuthorIsDefault()' and
'RDFeed::setChannelAuthorIsDefault()' methods.
* Added a 'Use as default Item Author' checkbox to the 'Edit Feed'
dialog in rdadmin(1).
Signed-off-by: Fred Gleason <fredg@paravelsystems.com>