[libvirt] [PATCHv2 0/3] Fix two DBus related failures

Some places in the code assumed that either DBus was compiled in or running: 1: systemd cgroup code failed to start a VM on hosts without DBus installed or running 2: nwfilter driver failed to initialize on hosts without DBus running This series fixes those issues as we have fallbacks in case DBus isn't available that we can use. Peter Krempa (3): virdbus: Add virDBusHasSystemBus() virsystemd: Don't fail to start VM if DBus isn't available or compiled in nwfilter: Don't fail to start if DBus isn't available src/libvirt_private.syms | 1 + src/nwfilter/nwfilter_driver.c | 8 ++++++-- src/util/virdbus.c | 34 +++++++++++++++++++++++++++++++--- src/util/virdbus.h | 1 + src/util/virsystemd.c | 4 ++-- 5 files changed, 41 insertions(+), 7 deletions(-) -- 1.8.3.2