Update notes for submitted changes

* Resolve x86_64 relocations in RS.
Update notes for submitted changes

* Enable linker loader support for 64bit elf object
Update notes for submitted changes

* Fix ARM64 build.
Update notes for submitted changes

* Bicubic resize intrinsic
Update notes for submitted changes

* Fix RS test apk problems
Update notes for submitted changes

* Add error check when init RS thread in sync mode.
Update notes for submitted changes

* Disconnect the ANativewindow before destroy the DrvAllocation.
Update notes for submitted changes

* Use LOCAL_JNI_SHARED_LIBRARIES to install JNI libs.
Update notes for submitted changes

* Skip the .ARM.exidx section, since it is currently unused.
Update notes for submitted changes

* Remove VP9-related runtime functions.
Update notes for submitted changes

* Improve RS intrinsics performance.
Update notes for submitted changes

* Revert "Add VP9 inter-frame prediction intrinsic"
Update notes for submitted changes

* Update fw/rs for Clang 3.5.
Update notes for submitted changes

* Fix x86_64 multiply defined symbol errors.
Update notes for submitted changes

* Fix precision issues with half_recip, half_sqrt, and half_rsqrt
Update notes for submitted changes

* Fix incorrect dependence on the system-built liblog.
Update notes for submitted changes

* Mark convert_(long/double) as API 21
* Fix performance regression in color matrix.
Update notes for submitted changes

* Add comments for fast-path RS kernel
Update notes for submitted changes

* Mark relaxed tests as relaxed
Update notes for submitted changes

* Switch to __builtin___clear_cache(), since __clear_cache is deprecated.