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: 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

Change-Id: I27015ed57b4c4390cfde3d0eecd82c3e76fd3786

This commit changed the initialization of best_mode_index to -1 to make
sure it is not mistakenly used for mode masking.

Change-Id: I75b05db51466070dd23c4ee57a4d4b40764dc019

Change-Id: I08aa0c213df34c084eb7a3c51b6b3306e49c7757

This reverts commit 22a3e307

Change-Id: I460d905edf5fb2006da58c18fbe02c04d0c631bb