Add mr.developer as an extension. Tell it where to find the repositories and indicate which eggs should be auto-checked out. Note by using a variable 'checkout-eggs' you don't have to type everything out twice.

extends =
    base.cfg
    versions.cfg
#    http://dist.plone.org/release/4.0.1/versions.cfg
    http://good-py.appspot.com/release/collective.xdv/1.0?plone=4.0.1

extensions =
    mr.developer

sources = sources

checkout-eggs =
    msd.melipona
    msd.daffodil
   
auto-checkout =
    ${buildout:checkout-eggs}

Add the eggs to the list (use the variable to save typing). I think there was a reason for putting collective.xdv last, but I don't know why

eggs =
    Plone
    PIL==1.1.6
    ${buildout:checkout-eggs}
    collective.xdv

Add the eggs to zcml - for some reason I couldn't get the variable working here, don't know why. Then add a variable to save typing a huge long URL for the svn each time. This needs to go somewhere in the [buildout] part, but it doesn't matter where.

zcml =
#    plone.reload
     msd.melipona
     msd.daffodil    
    
msd-plone3 = https://venture1.projectlocker.com/msd/plone3/svn

Add a sources part to the bottom of the buildout.cfg file:

[sources]
msd.daffodil = svn ${buildout:msd-plone3}/msd.daffodil/branches/plone4-3.0
msd.melipona = svn ${buildout:msd-plone3}/msd.melipona/branches/plone4-3.0