Bump configure.ac version to 1.5.3
Bump configure.ac version to 1.5.3

directhex/banshee-hacks,babycaseny/banshee,mono-soc-2011/banshee,lamalex/Banshee,directhex/banshee-hacks,ixfalia/banshee,Carbenium/banshee,babycaseny/banshee,allquixotic/banshee-gst-sharp-work,dufoli/banshee,Dynalon/banshee-osx,mono-soc-2011/banshee,allquixotic/banshee-gst-sharp-work,dufoli/banshee,babycaseny/banshee,allquixotic/banshee-gst-sharp-work,GNOME/banshee,petejohanson/banshee,Dynalon/banshee-osx,dufoli/banshee,Carbenium/banshee,lamalex/Banshee,lamalex/Banshee,directhex/banshee-hacks,mono-soc-2011/banshee,arfbtwn/banshee,Dynalon/banshee-osx,dufoli/banshee,babycaseny/banshee,stsundermann/banshee,directhex/banshee-hacks,ixfalia/banshee,mono-soc-2011/banshee,petejohanson/banshee,ixfalia/banshee,babycaseny/banshee,allquixotic/banshee-gst-sharp-work,stsundermann/banshee,arfbtwn/banshee,GNOME/banshee,dufoli/banshee,ixfalia/banshee,stsundermann/banshee,petejohanson/banshee,arfbtwn/banshee,arfbtwn/banshee,arfbtwn/banshee,ixfalia/banshee,stsundermann/banshee,Carbenium/banshee,arfbtwn/banshee,ixfalia/banshee,Carbenium/banshee,GNOME/banshee,Dynalon/banshee-osx,babycaseny/banshee,petejohanson/banshee,lamalex/Banshee,GNOME/banshee,Carbenium/banshee,dufoli/banshee,allquixotic/banshee-gst-sharp-work,arfbtwn/banshee,petejohanson/banshee,Dynalon/banshee-osx,GNOME/banshee,arfbtwn/banshee,ixfalia/banshee,allquixotic/banshee-gst-sharp-work,mono-soc-2011/banshee,directhex/banshee-hacks,babycaseny/banshee,Dynalon/banshee-osx,ixfalia/banshee,Carbenium/banshee,Dynalon/banshee-osx,directhex/banshee-hacks,stsundermann/banshee,lamalex/Banshee,Dynalon/banshee-osx,stsundermann/banshee,mono-soc-2011/banshee,babycaseny/banshee,dufoli/banshee,GNOME/banshee,petejohanson/banshee,dufoli/banshee,GNOME/banshee,stsundermann/banshee,lamalex/Banshee,mono-soc-2011/banshee,stsundermann/banshee,GNOME/banshee