Why does bitcoind not recognize the uncompressed version of my address?
Compressed and uncompressed keys are treated completely separately. Funds sent to the compressed point address will not be available to a client that has the uncompressed key in their wallet. 

That is to say, although mfjsW5m8CL5EazGBvjutZ4dgJwd6AjHM11 and n2HCyN8GWPuc8CrwbiiBASCS7iWku3Ke8S have the same private key, they are treated as completely separate to the Bitcoin network. Ideally they would be treated the same, but compressed ECDSA keys just weren't considered by Satoshi originally, it's only a more recent addition (sipa's, probably) to the client.