INCUS-162 - Change NotificationAnnounceListener based on About changes
- changes to reflect new git header-file directory structure
- prelim changes due to About name change of AnnounceHandlerApi to AnnouncementRegistrar.
- depends on these git clones existing: alljoyn_core, build_core, common, alljoyn_c. these are built prior to building NS.
scons command for building alljoyn and building NS (separately): scons WS=off TARG=linux VARIANT=debug CPU=x86_64