grc: use dashed lines for message connections
digital: fix CID 1090058 and 1043272 in constellation
digital: Fix CID 1043268 and 1043271
Merge branch 'maint'
Add a toolchain file for cross compiling.

This file depends on using a toolchain built from OpenEmbedded using
the populate_sdk function.

Signed-off-by: Philip Balister <philip@balister.org>
Signed-off-by: Doug Geiger <doug.geiger@bioradiation.net>
grc: toggle visibility of report and block tree widgets
grc: fix search entry focus (again)
Merge remote-tracking branch 'skoslowski/grc_toggle_widgets'
Merge branch 'maint'
docs: fixed doxygen warning.
docs: fixed exploring-gnuradio examples and added to doxygen manual.
pmt: added class comparator to rename comperator (to be removed in 3.8).
blocks: prevent alowing more input streams than this block uses.
docs: fixed/modifying/adding documentation for blocks a-l.
digital: fixed warnings about order of initializing variables in constellation.
Merge branch 'maint'
grc: switched to ToggleActions; made visibility settings persistent
Merge remote-tracking branch 'skoslowski/grc_toggle_widgets'
firdes: Fixed trailing whitespace in qa_firdes.cc.

Signed-off-by: Moritz Fischer <moritz@ettus.com>
firdes: Reset stream precision when done.

Fixes CID 1132150.

Signed-off-by: Moritz Fischer <moritz@ettus.com>