let callers pass in an XMLOutputter to output to
let callers pass in an XMLOutputter to output to

UngPirat/freesocial,d3vgru/StatusNet,chimo/social,zcopley/zcopleys-statusnet-clone,charlycoste/StatusNet,eXcomm/gnu-social,gnusocial/mainline,gnusocial/mainline,zh/statusnet,gnusocial/mainline,charnimda/lgbtpzn-social,studio666/gnu-social,charlycoste/StatusNet,eXcomm/gnu-social,d3vgru/StatusNet,UngPirat/freesocial,faulteh/gnu-social,sikevux/bsk-social,zh/statusnet,foocorp/gnu-social,faulteh/gnu-social,xebia/statusnet-oauth2,zcopley/zcopleys-statusnet-clone,chimo/social,zcopley/StatusNet,bankonme/gnu-social,sikevux/bsk-social,xebia/statusnet-oauth2,furtherfield/gnu-social,charnimda/lgbtpzn-social,eXcomm/gnu-social,sikevux/bsk-social,charnimda/lgbtpzn-social,csarven/statusnet,studio666/gnu-social,csarven/statusnet,minmb/statusnet,furtherfield/gnu-social,faulteh/gnu-social,zh/statusnet,Piratas/tortuga,studio666/gnu-social,zcopley/StatusNet,Piratas/tortuga,csarven/statusnet,chimo/social,zcopley/zcopleys-statusnet-clone,foocorp/gnu-social,minmb/statusnet,bankonme/gnu-social,zcopley/StatusNet,charlycoste/StatusNet,xebia/statusnet-oauth2,sikevux/bsk-social,furtherfield/gnu-social,d3vgru/StatusNet,furtherfield/gnu-social,bankonme/gnu-social,Piratas/tortuga,eXcomm/gnu-social,UngPirat/freesocial,gnusocial/mainline,studio666/gnu-social,minmb/statusnet,Piratas/tortuga,faulteh/gnu-social,foocorp/gnu-social,csarven/statusnet,bankonme/gnu-social