Allow brand new stake interest transactions into the QT transaction table

This change will allow brand new stake interest transactions from user's
just generated POS blocks to get entered into the QT transaction list.
If the new POS block gets orphaned, the transaction will get an undefined
status. But if the QT clint is closed and re-opened, the orphaned stake
transaction will then dissapear.
Merge pull request #30 from grokouser/fixTransList2

Allow brand new stake interest transactions into the QT transaction table
Pause POS mining while current block is POS

There is no point in creating POS blocks that will
automatically be orphaned by the new trust rules.
Hopefully this will reduce the number of those
annoying POS orphan transactions.

I also slipped in some extra debug output into
ProcessBlock().
Merge pull request #31 from grokouser/pausePOSmining

Pause POS mining while current block is POS
Update net.cpp

https://github.com/bitcoin/bitcoin/commit/6c6255edb54bed780f0879c906dccf6cfa98b4db
Merge pull request #35 from yacoin/master

Sync