[ENH] RemoveOldSocket ( comments... )

[denker at iam.unibe.ch]

Cleaning up is nice. But: we should try to make the transition easy for
those systems using the code. So two thing should be done:

 -> Register a fileout of the deleted Class on SqueakMap for
compatibility
 -> use the deprecation mechanism for deleting unused/renamed methods
    (all deprecated methods will be removed at the beginning of the next
     development cycle).