FELIX-3734 Fix two issues related to MetaTypeProvider tracking:
  - don't return MetaTypeInformation for fragment bundles
  - use the MetaTypeService implementation bundle context to
      track services
  - the latter allows to downgrade the OSGi Core Reference to 4.0 again

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@1402162 13f79535-47bb-0310-9956-ffa450edef68
5 files changed