make dnsmasq listen only on the qvd network; remove check for bootps UDP port

git-svn-id: https://svn.qindel.com/repos/main/projects/qindel/QVD/src/trunk@23755 4046b530-fbad-4e16-af16-ee11f0b55167
improve error messages for missing command

git-svn-id: https://svn.qindel.com/repos/main/projects/qindel/QVD/src/trunk@23756 4046b530-fbad-4e16-af16-ee11f0b55167
allow to change the path for all the binaries packed with QVD just setting one configuration variable

git-svn-id: https://svn.qindel.com/repos/main/projects/qindel/QVD/src/trunk@23757 4046b530-fbad-4e16-af16-ee11f0b55167