Add unversioned whatsNew to index-v2 (Closes: #1202)
copy_triple_t_store_metadata() can read the whatsNew from an unversioned release-notes.txt. For v2 copy this to the latest build.
copy_triple_t_store_metadata() can read the whatsNew from an unversioned release-notes.txt. For v2 copy this to the latest build.