[Pharo-project] managing external package with metacello

mariano I was thinking about the problem of managing pharo with metacello we should start with the simple ones: the ones we removed from the system - Sounds - LedMorph - MorphicExamples - (ArchiveViewer) Then check the packages that are shared. May be we can also publish metacello descriptions to load them. and we republish them when they changed. For example for OB I think that lukas publish in squeaksource the latest version colin ships as sar files. So we can publish in the OBSqueakSouce (not sure that this is good) or in pharo a ConfigurationOfOB Stef