* Catch exception if we can't change process priority on Windows
* Adds a handler for getting the Qemu related capabilities of the server. Currently includes just a check for KVM architectures.
* Fixed showing of Qemu hdb_disk_interface - it showed hda_disk_interface instead, which resulted in an odd visual glitch in the GUI.
* Made the gns3server.bat successfully start the server independent of the CWD at the time of running. It's now relative to the location of the .bat file itself.