ctrlport: fixed example's use of blocks.throttle.
ctrlport: turn off controlport inside gr-ctrlport-monitor for plotters.
blocks: added gr::blocks::tuntap_pdu

Linux only
Merge branch 'wip/pdu-tuntap'

Conflicts:
	gr-blocks/include/blocks/CMakeLists.txt
	gr-blocks/lib/CMakeLists.txt
	gr-blocks/swig/blocks_swig.i
qtgui: these can be closed from two directions (block or qwidget), this closes all events for either way.
qtgui: fix for time raster plots to set line attributes.
Merge branch 'master' into next

Conflicts:
	gnuradio-core/src/lib/io/gr_pdu_to_tagged_stream.cc
	gnuradio-core/src/lib/io/gr_tagged_stream_to_pdu.cc
core: removed gr_tuntap_pdu

Replaced by gr::blocks:tuntap_pdu
ctrlport: Allows drag-and-drop from table list to a plotter to add a new curve to the plot.
qtgui: fixed autoscale context menu option.
ctrlport: adding minor protection for dropped data onto plot so we don't just try and plot random stuff.
ctrlport: adding option to toggle export of the list of edges on/off.
Merge branch 'next' of gnuradio.org:gnuradio into next