cql3/maps.cc : implement maps::marker::bind
cql3/maps.cc : implement maps::marker::bind

Needed for system table (truncation pos)

scylladb/scylla,raphaelsc/scylla,raphaelsc/scylla,avikivity/scylla,scylladb/scylla,scylladb/scylla,kjniemi/scylla,raphaelsc/scylla,duarten/scylla,avikivity/scylla,avikivity/scylla,kangkot/scylla,duarten/scylla,kangkot/scylla,kjniemi/scylla,scylladb/scylla,duarten/scylla,kjniemi/scylla,kangkot/scylla