As of version 1.0.0, libosinfo was split into 3 packages: OS database files,
CLI tools, and the library itself. According to this:
- update devel/libosinfo to 1.0.0
- add sysutils/osinfo-db-tools version 1.0.0
- add misc/osinfo-db version 20160728
- add an UPDATING entry to outline conflicts between the old version of libosinfo and osinfo-db-tools which install files with the same names