Improved PIVX support (beta version)

[THIS IS A TESTING RELEASE AND SHOULD NOT BE CONSIDERED STABLE YET]

This version includes enhanced PIVX support for PIVX and PIVX variant masternodes. The operation is slightly different. To engage PIVX-based nodes, start the phantom daemon with the new -broadcast_listen flag. Let the phantom engage with the network for a few minutes. Once the peer count has engaged, press start[-all, -alias] from your PIVX-based desktop wallet.

You should see output like this: Masternode broadcast detected for: [HASH]:[INDEX]

Leave the phantom daemon running for several hours. Once the node is fully engaged and paying, you should be able to restart the phantom daemon without the -broadcast_listen flag to clear out the extra memory.