Configure TravisCI to pull pkgs needed for tests.
Implement getreceivedbyaddress RPC.

Unlike Bitcoin Core wallet, this implementation does not ignore
coinbase transactions.
Fix a couple comments
Changed TxIn.PreviousOutpoint to TxIn.PreviousOutPoint.
IMPORT PATH MODIFICATION CHANGESET
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Please use this changeset as the first one on top of the conformal codebase.
Note that if there are new imports, they need to be changed as part of this
changeset. In general, use "git rebase" on github.com/conformal's version
and apply this changeset first.
Task #396 on Task Board:

Create a stub websocket call getdepositscript.