Show nodeid instead of addresses (for anonymity) unless otherwise requested.
Per-peer block download tracking and stalled download detection.

Keep track of which block is being requested (and to be requested) from
each peer, and limit the number of blocks in-flight per peer. In addition,
detect stalled downloads, and disconnect if they persist for too long.

This means blocks are never requested twice, and should eliminate duplicate
downloads during synchronization.
NodeID (for parallel block download)
Display blocks received without needing debug=net
Don't need debug=net to display some debug lines.
Correct logic so that not both lines are displayed

e.g.:-
2014-02-25 06:56:39 received getdata (1 invsz)
2014-02-25 06:56:39 received getdata for: tx 8e2e08d1d851eb1ac800e814796dd7b86fd6d3a8fad41d5bdcb873ac6f4aba8d
Add net2 debug option