`stbt run -vv` enables debug of stbt-motiondetect
`stbt run -vv` enables debug of stbt-motiondetect

`stbt run -vv` now also sets the debugDirectory property of the
stbt-motiondetect GStreamer element to "stbt-debug/motiondetect".

The stbt-templatematch debugDirectory is also moved from "stbt-debug"
to "stbt-debug/templatematch".

martynjarvis/stb-tester,martynjarvis/stb-tester,martynjarvis/stb-tester,LewisHaley/stb-tester,wmanley/stb-tester,LewisHaley/stb-tester,wmanley/stb-tester,wmanley/stb-tester,martynjarvis/stb-tester,LewisHaley/stb-tester,stb-tester/stb-tester,stb-tester/stb-tester,LewisHaley/stb-tester,LewisHaley/stb-tester,wmanley/stb-tester,LewisHaley/stb-tester,wmanley/stb-tester,martynjarvis/stb-tester,martynjarvis/stb-tester,stb-tester/stb-tester,stb-tester/stb-tester,martynjarvis/stb-tester,LewisHaley/stb-tester