collectd: Update to 5.4.1

-update collectd to the current release 5.4.1
-fix sigrok glib check (upstream patch after 5.4.1)

Note:
Changes are required also to luci-statistics in Luci source.
Patch in http://patchwork.openwrt.org/patch/5303/

Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
gstreamer1: reorganize options selection menus
gst-plugins-bad: plugins-bad package missing (fix install def)

Signed-off-by: Ted Hess <thess@kitschensync.net>
gst1-libav: Import gstreamer libary based on bundled libav

Signed-off-by: Ted Hess <thess@kitschensync.net>
openvswitch: remove ovs-controller package

According to the NEWS message from the main OVS site:
    http://openvswitch.org/releases/NEWS-2.3.0

Excerpt:
 - ovs-controller has been renamed test-controller.  It is no longer
   packaged or installed by default, because too many users assumed
   incorrectly that ovs-controller was a necessary or desirable part
   of an Open vSwitch deployment.

Current feed was updated based on a feed that packaged OVS 1.9,
and subsequently updated.

For now, we'll remove it, since it's not required.
When I tested the feed, I tested it on a setup that has been configured
some time ago, and does not have that package enabled.

So, I'll remove it to prevent confusion.

Signed-off-by: Alexandru Ardelean ardeleanalex@gmail.com
Merge pull request #315 from thess/gst1-menus

gstreamer1: reorganize options selection menus
Merge pull request #318 from thess/gst1-libav

gst1-libav: Import gstreamer libary based on bundled libav
Merge pull request #320 from commodo/ovs-controller-remove

openvswitch: remove ovs-controller package
openvswitch: disable MIPS16

Signed-off-by: Steven Barth <steven@midlink.org>
Merge pull request #298 from hnyman/collectd541

collectd: Update to 5.4.1