[client] fixed wicked show to create client object
[client] parse static addrconf even without IPADDR
[client] Disabled not yet known optional addrconf tag
[schema] Disabled unfinished openvpn schema and extension
[client] wicked show ifname and formating tweaks
xml: Adding xml_document_array object and functions
[spec file] Applied obs adjustments and copyright comment
[utils] added a ni_realpath utility wrapper
[appconfig] added ni_get_global_config_dir and path

The ni_set_global_config_path function now also resolves
to absolute (for daemons) and rejects incorrect paths.
Fail when the global --config path gets rejected
Fix signed char issues in xml_escape_entities
Merge pull request #4 from olafhering/xml_escape_entities-signed-char

Fix signed char issues in xml_escape_entities