dhcp4: do not send hostname to server in discover
rpm: explicit piddir,statedir,storedir in spec

Define rpm variables and explicitly pass them to configure to
simplify an override to use /run instead of /var/run default.
version 0.5.20
Doc: Add wicked release making HOWTO
dhcp6: fix to allow supported devices (bnc#874561)
Merge pull request #217 from mtomaschewski/bnc874561

dhcp6: fix to allow supported devices (bnc#874561)
dhcp,autoip: log unsupported devices in debug1 level
Merge pull request #218 from mtomaschewski/bnc874561

dhcp,autoip: log unsupported devices in debug1 level
version 0.5.21
Merge pull request #215 from pwieczorkiewicz/release-mini-HOWTO
client: Do not display transient return codes by default

New option flag --transient is to enable transient
return codes (dhcp timeout).
By default ERROR is reported only on a severe errors.
Merge pull request #220 from pwieczorkiewicz/transient

client: Do not display transient return codes by default bnc#875154
Do not close stderr on daemon() when in log-target
utils: close fds in child, after the daemon() call
Merge pull request #222 from mtomaschewski/noclose

Do not close stderr in daemon() when used in log-target
dhcp4: accept packets without udp checksum (bnc#873267)
Merge pull request #223 from mtomaschewski/bnc873267

dhcp4: accept packets without udp checksum (bnc#873267)