Add Backends to LD_LIBRARY_PATH in launcher
Add Backends to LD_LIBRARY_PATH in launcher

Fixes issue on some distros with loading libbnx11.so from
Banshee.NowPlaying.X11.dll (bgo#622028)

Signed-off-by: Gabriel Burt <ce11a5f747b579a775c140646376daaba8c3eb7d@gmail.com>

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