Common framework to manage astronomy packages

 This package allows the installation and removal of astronomy catalogues,
 converting those catalogues to astronomy programs' data formats.
 .
 All stardata catalogues conforming to stardata-common policy are
 converted automatically at installation time to the formats of
 astronomy programs that support stardata-common.
 .
 The register-stardata program is transparent for the user; this program
 is called automatically when any astronomy package conforming to the
 stardata-common policy is installed, upgraded or removed.