Make strndup() available on Linux.
Make strndup() available on Linux.

duydb2/olsr,brabander/olsr,acinonyx/olsrd,acinonyx/olsrd,diogomg/olsrd-binary-heap,tdz/olsrd,cl4u2/olsrd-wot-pgp,zioproto/olsrd-gsoc2012,cl4u2/olsrd-wot-pgp,cl4u2/olsrd-wot-pgp,sauloqueiroz/incremental-spf,nolith/olsrd,nolith/olsrd,cholin/olsrd,sebkur/olsrd,sauloqueiroz/incremental-spf,brabander/olsr,diogomg/olsrd-binary-heap,servalproject/olsr,duydb2/olsr,cholin/olsrd,zioproto/olsrd-gsoc2012,sebkur/olsrd,sebkur/olsrd,sauloqueiroz/incremental-spf,tdz/olsrd,sauloqueiroz/incremental-spf,zioproto/olsrd-gsoc2012,nolith/olsrd,diogomg/olsrd,ninuxorg/olsrd,acinonyx/olsrd,duydb2/olsr,duydb2/olsr,diogomg/olsrd-binary-heap,zioproto/olsrd-gsoc2012,zioproto/olsrd-gsoc2012,diogomg/olsrd-binary-heap,diogomg/olsrd,diogomg/olsrd,duydb2/olsr,diogomg/olsrd-binary-heap,cholin/olsrd,cholin/olsrd,ralisi/olsrd_cl_roam,diogomg/olsrd,servalproject/olsr,nolith/olsrd,nolith/olsrd,diogomg/olsrd,sebkur/olsrd,tdz/olsrd,diogomg/olsrd-binary-heap,cholin/olsrd,zioproto/olsrd-gsoc2012,ralisi/olsrd_cl_roam,duydb2/olsr,diogomg/olsrd,sebkur/olsrd,zioproto/olsrd,diogomg/olsrd-binary-heap,acinonyx/olsrd,tdz/olsrd,acinonyx/olsrd,brabander/olsr,ninuxorg/olsrd,zioproto/olsrd,ninuxorg/olsrd,zioproto/olsrd,sebkur/olsrd,servalproject/olsr,ninuxorg/olsrd,servalproject/olsr,cl4u2/olsrd-wot-pgp,servalproject/olsr,brabander/olsr,servalproject/olsr,ralisi/olsrd_cl_roam,ninuxorg/olsrd,diogomg/olsrd,zioproto/olsrd,duydb2/olsr,tdz/olsrd,zioproto/olsrd,duydb2/olsr,ralisi/olsrd_cl_roam,cl4u2/olsrd-wot-pgp