The case SetMerkleBranch(NULL) was never actually used, and thus the
involved code (loading the block from disk) can be removed and the
implementation simplified.
Port over https://github.com/chronokings/huntercoin/pull/19 from
Huntercoin: This implements a new RPC command "getchaintips" that can be
used to find all currently active chain heads. This is similar to the
-printblocktree startup option, but it can be used without restarting
just via the RPC interface on a running daemon.
Get rid of SendMoney and replace it by the functionality of
SendMoneyToDestination. This cleans up the code, since only
SendMoneyToDestination was actually used (SendMoney internally from this
routine).