Some of the logic in oe-pkgdata-util (specifically glob) is generally useful inside the core classes. For example, lib/oe/package_manager has to write a file and spawn oe-pkgdata-util to expand the globs: it would be neater if there were shared code in lib/oe that both package_manager and oe-pkgdata-util could call. (I want to reuse the same logic to reimplement package_depchains)
Closing as this is just a cleanup.