Use 'nproc' to detect number of CPU cores.
New message queue (needs more testing).
Added ability to auto-connect JACK system ports.
Add tooltips for JACK connect checkboxes.
Rename JACK connect checkboxes and update translations.
Update Dutch translation.
Merge branch 'master' into glinject-next

Conflicts:
	src/GUI/PageRecord.cpp
	src/Makefile.in
	src/translations/simplescreenrecorder_de.ts
	src/translations/simplescreenrecorder_nl.ts
	src/translations/simplescreenrecorder_pl.ts
	src/translations/simplescreenrecorder_zh_CN.ts
Copied and updated translations from glinject-next.
Copied new translation files from master.
Merge branch 'master' into glinject-next

Conflicts:
	src/Makefile.in