The decklink driver eventually crashes after repeated creation/deletion
of device, input, output, and configuration objects. Change to create
these at the outset and keep them around forever.
Builds with MSVC, not tested in MinGW or anything else. Added
COM handling code, borrowed from dshowvideosink. Moved Linux
specific files to ./linux and added Windows specific files to
./win (generated from IDL files in VS9). Added macros to handle
BSTR and defined bool as BOOL. Fixes#655362.
Signed-off-by: David Schleef <ds@schleef.org>
