[FFmpeg-devel] [PATCH 3/3] avdevice/decklink: Allow compilation with native threads.

[Matt Oliver]

Allows the decklink device to be used with native win32/os2 threads instead
of just pthreads.

Note: I dont have a decklink device to test this but It just allows the use
of the already tested win32/os2 pthread simulation functions so there
shouldnt be any issues.