Remove the PLUGIN_PRINT() and PLUGIN_WARN() macros and use the
standard NM logging functions instead.
Also changed PLUGIN_PRINT("error: ...") to nm_log_warn("...") in
places.
Since Debian 7 (Wheezy) / Ubuntu 11.04 (Natty Narwhal) ifupdown supports
the source stanza to source in other configuration files from
/etc/network/interfaces.
Add support to the ifupdown plugin to include configuration files via
source.
Patch did not apply cleanly and was slightly modified by Thomas Haller.
https://bugzilla.gnome.org/show_bug.cgi?id=707276
Signed-off-by: Thomas Haller <thaller@redhat.com>
Reviewed-by: Sebastian Harl <tokkee@debian.org>