audio/portaudio: Add three new functions* required by Audacity
* Pa_GetStreamHostApiType, PaOSS_GetStream{In,Out}putDevice
This will allow us to change audio/audacity to use audio/portaudio
instead of the bundled version. End goal is sndio support in
Audacity without having to duplicate existing patches.
While here
- Remove unnecessary patches
- Cleanup DOCS and PATEST install
- Take maintainership
Obtained from: Audacity 2.2.2's portaudio.patch