You can now run multiple reload_daemons by setting an optional
tag on the command line.  The default reload daemon is tagless,
and only looks for nodes in the reloadpending or reloading experiments
that are untagged.

You can tag node_types or nodes by adding a node_type_attribute or
node_attribute with name reload_daemon_pool; the value should match
whatever tag you gave your reload_daemon on the command line; the
reload_daemon will only pick up and operate on matching nodes.

The default reload_daemon will not pick up nodes or node_types that are
tagged.

node_attributes override node_type_attributes as always.