examples: Some of the examples were updated to use 3.7 API, but the new module namespaces were never imported.
Merge branch 'maint'
Merge remote-tracking branch 'marcusmueller/improve_source_sink_c++_template'
docs: Fixes sphinx docs generating script to use any current LD_LIBRARY_PATH already set by the user.
Merge branch 'maint'
digital: fix digital.cpmmod_bc XML for new constants location
Merge branch 'maint'
runtime: fixed copy/paste error in volk_types.py
Merge branch 'maint'