Avoid packing the bitstream 2 times unless we need to.  For me this
at speed -5 was a 2% speed up.

Change-Id: I32205c98f55eedd4ff031ed5fb498c84bdaa855d

Change-Id: I80f3e197562f3424acddbff786a5d0d209fbd666

There is no reason to have fourcc masks, everything just works without
them.

Change-Id: I1d48100e7b7d5ef55ec49a708ba6adcb9ab4ecd8

Change-Id: I0fbb7615545861e26ebffe72bd44f3a0e8616df7

Change-Id: Ia24c9b1ff2d51dd9cb133722a041a615e1b8419f

Change-Id: I10c423bde7ea5a3bac9f14f35c73b6bc31c8f3e3

Rearranges the END_USAGE typedef to make it compatible with the
vpx user input.

Change-Id: Ic9fa9e9edbee7c0ad01e12e685b219582fcecd16

Change-Id: I83031180723ee59270ec8fb66b2f73c0796bee25

group vp8/vp9 only options under CONFIG_*_ENCODER

Change-Id: I331bb154df019b398780be6451355de50657a33e

Restore warning when attempting to use lagged encoding with real time mode.

Change-Id: I109026db64566906f288f42d2686084ae5c13500

Calculate the skip_coeff as part of the encode process, rather than
checking the eobs after the fact with another pass.

Change-Id: Ib41b139e96a97dee30e4b993b4cc53d86337128d

Change-Id: Ieaeb53902ce0ffd5b1b27a92583e98abfa791433

Change-Id: I5200bf68b43578eaadc4ea47b37f2633fa96d7bd

Change-Id: I7e53f6345a4cf89309262f50850c9ad08ed3c527

Refactoring for speed in the same vein as detokenize_b...

Change-Id: I90779aa46e3b13c22ddce9a42b60e1920ad97142

* changes:
  Removing unused switchable_interp_count[] field from VP9_COMP.
  Using clamp() function instead of the same raw code.