0.13.1 gitian binaries:

```json
>> sendmany "" '{"ad1":0.1, "ad2":0.1}'
<< "14af4b0aa9a792f32e55d3c9c73b2c6356033825d955ae71313f7dc4008234e1"
```

current master self compiled:
```json
>> sendmany "" '{"ad1":0.1, "ad2":0.1}'
<< "sendmany help text"
```

{
    if (request.fHelp) {
        return "help message";
    }
    return request.params.write(0, 0);
}
static const CRPCCommand vRPCCommands[] =
{
    { "test", "rpcNestedTest", &rpcNestedTest_rpc, true },
};
void RPCNestedTests::rpcNestedTests()
{
    UniValue jsonRPCError;
    
    
    const CChainParams& chainparams = Params();
    RegisterAllCoreRPCCommands(tableRPC);
    tableRPC.appendCommand("rpcNestedTest", &vRPCCommands[0]);
    ClearDatadirCache();
    std::string path = QDir::tempPath().toStdString() + "/" + strprintf("test_bitcoin_qt_%lu_%i", (unsigned long)GetTime(), (int)(GetRand(100000)));
    QDir dir(QString::fromStdString(path));
    dir.mkpath(".");
    mapArgs["-datadir"] = path;
    
    pblocktree = new CBlockTreeDB(1 << 20, true);
    pcoinsdbview = new CCoinsViewDB(1 << 23, true);
    pcoinsTip = new CCoinsViewCache(pcoinsdbview);