Re: [libvirt] [PATCHv2 6/8] qemu: convert to virCommand

* src/qemu/qemu_conf.c (qemudExtractVersionInfo): Check for file before executing it here, rather than in callers. (qemudBuildCommandLine): Rewrite with virCommand. * src/qemu/qemu_conf.h (qemudBuildCommandLine): Update signature. * src/qemu/qemu_driver.c (qemuAssignPCIAddresses) (qemudStartVMDaemon, qemuDomainXMLToNative): Adjust callers. --- v2: new patch, taking most of the ideas from https://www.redhat.com/archives/libvir-list/2010-November/msg00979.html but making it better by using virCommand improvements