NetPanzer 0.8.1

Thanks to Karl Bastiman from amber.org.uk who provides new hosting for the netpanzer masterserver! I also created a small bugfix release whose main intention is to set the default masterserver to netpanzer.dyndns.org. If you can't see any games in the ingame server browser, please change your masterservers setting netpanzer.ini to netpanzer.dyndns.org

• Change default masterserver to netpanzer.dyndns.org
• Fix remote DOS when sending invalid frame number (yes, this fixes this "security advisory" by Luigi Auriemma)
• Fix gcc 4.1 compilation
• Make server handle clients more gracefully that drop during connect

Please understand that I have no time to create (and test/debug) any binary packages for this new release.