PortMedia Code

Got virttest.c to work on macOS -- important reworking of internals to update device list when Pm_Initialize() is called after Pm_Terminte() and to allow for devices to be re-opened.

Omitted a file from the previous commit: virttest.c

Lots of work on error codes and error reporting for ALSA, including cleaning up the documentation. Added virttest.c to test virtual device create/delete functions. Got virtual devices working with separate create and open functions (also close and delete functions are separate).

Adding new test program to the repo.

Changed virtual device API to separate device create/delete from open/close. Also made handling of timestamps more consistent with the idea that incoming timestamps should reflect the message receive time, not zero and not some time that is long gone. This update is tested moderately on macOS, so Linux is not working yet.

Mistake in target directory for docs.

Added script to move any changes to github repo.

Worked on Doxygen comments and created new documentation directory.

Added doxygen output -- this needs some proofreading and refinement for formatting, but the info is all good.

Adding missing file to repo.