slicetype: initialize bReady (bug spotted by valgrind)
ratecontrol: initialize singleFrameVbv (bug spotted by valgrind)
rest: improve --rd docs
psyrd: use actual recon pixels for intra predictions (bug spotted by valgrind)
psyrd: use EMMS before checking calcPsyRdCost
cleanup unused arg
encodeCoeffNxN(): call only if non-zero coeff exists
refine merge related