Update notes for submitted changes

* ARCH_ARM_HAVE_NEON should be consistent for aarch64 targets.
Update notes for submitted changes

* Switch to use rs_version.mk for consistency.
Update notes for submitted changes

* Refactor RSEmbedInfo pass.
Update notes for submitted changes

* Switch to MetadataExtractor path.
Update notes for submitted changes

* Switch RSForEachExpandPass to use MetadataExtractor.
Update notes for submitted changes

* Fix some minor issues picked up by valgrind.
Update notes for submitted changes

* Remove unnecessary inheritance for CompilerConfig, as we switch to offline bcc.
Update notes for submitted changes

* Remove unused define from makefile.
Update notes for submitted changes

* Fix missing include of Config.h.