[libvirt] boostrap: gzip version check problem on FreeBSD

boostrap.conf lists gzip as build dependency. bootstrap then tries to get it's version number using a get_version() function that executes 'gzio --version' and tries to parse the result. The sed expression expects the version number to contain a dot as gzip outputs it on Linux: $ gzip --version gzip 1.3.12 But on FreeBSD it outputs this: # gzip --version FreeBSD gzip 20100407 Therefore, the sed expression should be relaxed, or bootstrap should not try to parse the version number when it doesn't need it because gzip is listed with '-' as version requirement. Matthias