Refs #88: warning when host can not be resolved.
it is ok that remote address list is empty only if bootstraps.
Refs #88: to pass clang
Refs #88: remove unnecessary const qualifier
Refs #88: remove mcast_addr_.empty from condition
Merge pull request #183 from codership/gh88

closes #88 merging pull reques #183
refs #184 initial systemd support
Merge branch '3.x' of github.com:codership/galera into 3.x
Merge fix of gh88