vbv: bug fix - down shifting of satdcost for 10 bit depth.
revert getSigCtxInc() to 0.7, this version was faster

--HG--
extra : amend_source : 37509fb8d71c0ee95822aeb058427dc752e21807
vbv: use row wise IntraSatdCost to predict vbv intra frame bits.

If P/B slice is predominatly intra coded, use intra SatdCost to predict the row
bits in vbv.

--HG--
branch : stable
vbv: bug fixes - move row Predictors, frameSizeEstimated to Frame Encoder scope.

Improves quality and controls buffer underflow when Frame parallelism is enabled.

--HG--
branch : stable
rc: move qp2qscale and qscale2qp function to common

--HG--
branch : stable
vbv: bug fix - down shifting of satdcost for 10 bit depth.

--HG--
branch : stable
TEncSearch: dehungarians and other nits
Merge with stable