[bockbuild] add pushd/popd support
[bockbuild] add pushd/popd support

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