GNS3 0.8.3.1

GNS3 version 0.8.3.1 has been released, it brings minor fixes and support for access to GNS3 VirtualBox VM hostnames from inside VMs (e.g. VBoxControl guestproperty get NameInGNS3). Also, it includes updated vboxwrapper.exe that work with the new VirtualBox 4.2