configure: use more variables instead of hardcoding version numbers
configure: use more variables instead of hardcoding version numbers

These are the last three elements that were left to use variables in the
configuration summary.

dufoli/banshee,ixfalia/banshee,dufoli/banshee,Dynalon/banshee-osx,GNOME/banshee,arfbtwn/banshee,GNOME/banshee,dufoli/banshee,babycaseny/banshee,dufoli/banshee,ixfalia/banshee,arfbtwn/banshee,GNOME/banshee,dufoli/banshee,babycaseny/banshee,Carbenium/banshee,babycaseny/banshee,dufoli/banshee,Dynalon/banshee-osx,stsundermann/banshee,Dynalon/banshee-osx,Dynalon/banshee-osx,arfbtwn/banshee,dufoli/banshee,stsundermann/banshee,ixfalia/banshee,stsundermann/banshee,ixfalia/banshee,stsundermann/banshee,stsundermann/banshee,arfbtwn/banshee,arfbtwn/banshee,Carbenium/banshee,GNOME/banshee,babycaseny/banshee,Dynalon/banshee-osx,ixfalia/banshee,arfbtwn/banshee,Carbenium/banshee,GNOME/banshee,babycaseny/banshee,Dynalon/banshee-osx,babycaseny/banshee,ixfalia/banshee,GNOME/banshee,Dynalon/banshee-osx,arfbtwn/banshee,ixfalia/banshee,ixfalia/banshee,arfbtwn/banshee,GNOME/banshee,Carbenium/banshee,stsundermann/banshee,dufoli/banshee,stsundermann/banshee,babycaseny/banshee,Carbenium/banshee,Dynalon/banshee-osx,stsundermann/banshee,Carbenium/banshee,GNOME/banshee,babycaseny/banshee