logging: use debug guard in all debug macros
man: routes.5
man: fixed routes.5 -- just template is needed
fsm: export ni_ifworker_fail() and ni_ifworker_success()
fsm: Add ni_ifworker_is_valid_state()
ifdown: Disable devices and stop all policies
nanny: Turn errors to debug

Display only errors from client part. Internal nanny functions should be
lowered to debug.
client: Add policy match generation functions
policy: Export policy checking functions
client: Accept policy validation by default
xml: Add xml_node_is_empty()
man: ifcfg-tunnel

Bring in from sysconfig/master and update as needed for wicked.
man: renamed routes.5 to ifroute.5 with alias
man: iproute.5 improvements
Merge pull request #251 from kmroz/man-ifcfg-tunnel
sysconfig: added wicked variables to network/config
Merge pull request #250 from pwieczorkiewicz/nanny_work2
Merge pull request #252 from mtomaschewski/sysconfig
Merge branch 'master' into testing