Updated release of MagpieCoin for Win64.

The old codes of pool mining will call the minerd exe program directly, which may cause anti virus software false positive error reporting in Windows.

So we update the version: Magpiecoin-v.1.5.1-Qt-Ubuntu-18.04-64bit.zip
https://github.com/mgpc-lab/MagpieCoin/releases/download/v1.5.1/Magpiecoin-v.1.5.1-Qt-Ubuntu-18.04-64bit.zip

In other words, the in-wallet pool mining function is no longer available.

Plz down the new version for windows.