Also extract _m() used in core.
Also extract _m() used in core.

Signed-off-by: Siebrand Mazeland <4512bdcb1c12d9c751af5aed58b0bccee4de299b@xs4all.nl>

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