Set optimizer options in WelsVP similarly to the other encoder projects
Remove stray optimization options from the WelsEncPlus project

There's not much performance critical code within this lib, all
the performance critical code in the encoder is in WelsEncCore and
WelsVP, so there's little point in having an extra odd option enabled
here.
Merge pull request #1132 from mstorsjo/unify-encoder-opts

Unify optimization options within the encoder MSVC projects
Use the correct syntax for the aarch64 ext instructions

Since Xcode 5.1, the apple tools actually support using the
official, correct syntax for the ext instructions. This syntax
is already used in a number of places already - use it consistently,
and get rid of the compatibility hacks.
add return info for all cases
Merge pull request #1134 from mstorsjo/aarch64-ext

Use the correct syntax for the aarch64 ext instructions
Revert "turn off LTR for screen content. after checking LTR logic, will turn on"

This reverts commit 0fda3d92354f3593f12efe8c18aee109cc5836c3.
Merge pull request #1139 from huili2/parse_fail_master

add return info for all cases
Merge remote-tracking branch 'upstream/master' into travis.osx