add option to save hypervisor output (fixes #1122); start kvm in its own process group, otherwise signals are propagated; fix state timeouts on kvm handler

git-svn-id: https://svn.qindel.com/repos/main/projects/qindel/QVD/src/trunk@21628 4046b530-fbad-4e16-af16-ee11f0b55167
Optional settings tab

git-svn-id: https://svn.qindel.com/repos/main/projects/qindel/QVD/src/trunk@21629 4046b530-fbad-4e16-af16-ee11f0b55167
Undoing accidental changes

git-svn-id: https://svn.qindel.com/repos/main/projects/qindel/QVD/src/trunk@21630 4046b530-fbad-4e16-af16-ee11f0b55167