Decode pkg-config output properly for Python 3 (fixes #58)
Decode pkg-config output properly for Python 3 (fixes #58)

PyAV-Org/PyAV,pupil-labs/PyAV,danielballan/PyAV,mikeboers/PyAV,mcpv/PyAV,PyAV-Org/PyAV,mcpv/PyAV,xxr3376/PyAV,markreidvfx/PyAV,mcpv/PyAV,mikeboers/PyAV,xxr3376/PyAV,xxr3376/PyAV,pupil-labs/PyAV,pupil-labs/PyAV,danielballan/PyAV,markreidvfx/PyAV,danielballan/PyAV,pupil-labs/PyAV,markreidvfx/PyAV