user323: What are the core changes to bitcoind that allow one to merge-mine? Are there any new JSON-RPC commands that are enabled, or changes to the existing ones?

user942: Here is my merged mining implementation - not quite up to date

323: <p>What are the core <a href="http://dot-bit.org/Merged_Mining#Getting_the_source_code_.28pool_operators_only.29" rel="nofollow">changes to bitcoind</a> that allow one to <a href="http://dot-bit.org/Merged_Mining" rel="nofollow">merge-mine</a>? Are there any new JSON-RPC commands that are enabled, or changes to the existing ones?</p>
 942: <p><a href="https://bitcointalk.org/index.php?topic=47779.0" rel="nofollow">Here is my merged mining implementation - not quite up to date</a></p>
