bugfix: multiple timer manipulations, while a timer walk is in progress may corrupt the timer table
bugfix: multiple timer manipulations, while a timer walk is in progress may corrupt the timer table

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