Add cmake rules to install mmal headerfiles to /opt/vc/include/interface/mmal/*
Make constant QP mode actually have constant QP
Merge pull request #138 from rktrlng/mmal_header_install

Add cmake rules to install mmal headerfiles to /opt/vc/include/interface...
Merge pull request #139 from aizvorski/master

Make constant QP mode actually have constant QP
hello_pi: Tidy up hello_video code
interface: Updates from vdec3 firmware update