importNode bugfix for undefined node
importNode bugfix for undefined node

darcs-hash:20081120234923-eefa4-952f059fdda781d3f223a1f26af4741b59bb9421.gz

sikevux/bsk-social,minmb/statusnet,shashi/StatusNet,chimo/social,csarven/statusnet,znarf/statusnet-ladistribution,csarven/statusnet,charlycoste/StatusNet,brion/StatusNet,eXcomm/gnu-social,faulteh/gnu-social,zcopley/StatusNet,bankonme/gnu-social,faulteh/gnu-social,bankonme/gnu-social,gnusocial/mainline,znarf/statusnet-ladistribution,Piratas/tortuga,xebia/statusnet-oauth2,studio666/gnu-social,zcopley/StatusNet,UngPirat/freesocial,zh/statusnet,studio666/gnu-social,eXcomm/gnu-social,furtherfield/gnu-social,bankonme/gnu-social,bankonme/gnu-social,meitar/laconica,minmb/statusnet,sikevux/bsk-social,studio666/gnu-social,zcopley/zcopleys-statusnet-clone,Piratas/tortuga,d3vgru/StatusNet,csarven/statusnet,zcopley/zcopleys-statusnet-clone,shashi/StatusNet,csarven/statusnet,meitar/laconica,eXcomm/gnu-social,minmb/statusnet,brion/StatusNet,xebia/statusnet-oauth2,chimo/social,Br3nda/laconica,faulteh/gnu-social,meitar/laconica,Br3nda/laconica,gnusocial/mainline,brion/StatusNet,charlycoste/StatusNet,furtherfield/gnu-social,sikevux/bsk-social,foocorp/gnu-social,eXcomm/gnu-social,chimo/social,gnusocial/mainline,sikevux/bsk-social,xebia/statusnet-oauth2,Piratas/tortuga,charnimda/lgbtpzn-social,d3vgru/StatusNet,furtherfield/gnu-social,Piratas/tortuga,gnusocial/mainline,foocorp/gnu-social,zh/statusnet,Br3nda/laconica,charnimda/lgbtpzn-social,zcopley/StatusNet,zh/statusnet,charnimda/lgbtpzn-social,zcopley/zcopleys-statusnet-clone,znarf/statusnet-ladistribution,charlycoste/StatusNet,faulteh/gnu-social,UngPirat/freesocial,UngPirat/freesocial,foocorp/gnu-social,furtherfield/gnu-social,shashi/StatusNet,studio666/gnu-social,d3vgru/StatusNet