Change-Id: I2d1b5c1481aefe226082e1f096ca9edd340d4d31

This increases the range of Q values available to
normal inter frames to allow encoder a better chance
to hit the target rate.

Change-Id: I33cd96469a46577fdcea631e26d3355710909e6d

The limits applied under the flag
"LIMIT_QRANGE_FOR_ALTREF_AND_KEY"
behaved in an undesirable way if the gap between
active_worst_quality and active_best_quality was
changed.

In this patch, the adjustment is made using the
vp9_compute_qdelta_by_rate() function and fixed
rate multiplier values. Hence it is not impacted by
the relative value of active_best_quality.

Change-Id: I93b3308e04ade1e4eb5af63edf64f91cd3700249

Change-Id: I1020dec1ac2e9404a8efcc04681a050417b8b065

Change-Id: Ie584128e0120c2d849e8809c4128a759b85e210c

Change-Id: Ib9f7fd3fd56e304e5f587f790c97ac34a3077265

Change-Id: Ib00a694b9cf8e0c276dfefddab8cb36b8693e022

Change-Id: Id755813fd5e78039bc9e76a046b33c8cafbc36dc

Change-Id: If33087462293605f79d9281af133091fff33a876

Problem has been introduced recently with the cleanup patch
I0816ec12ec0a6f21d0f25f10c214b5fd327afc6c

Change-Id: Iaacb956a6039eb5826b82618dc03be32053fb892

And change a parameter setting in vpx_temporal_scalable_patterns.

Change-Id: I7c208296ebcecbc8f73de032f6cdb26a1fc1442b

Change-Id: I9886f52a0fb19b4250c4c9444c3348897c84c9e2

Change-Id: I5c62fabd380492740c1c2c0d71861e64ee1b05e8

Minor change to use matching type in comparison.

Change-Id: I670cae2d584918c67c1af791a797629f392f599e

This fixes warning when compiling libvpx for PNaCl. PNaCl's version
of math.h defines M_LOG2_E.

Change-Id: Iba9450441538e9f82447ad2936bea94d21bafdf1