Implement the Bindery "List Relations of an Object" endpoint.
Parse the NCP 17 subfunction 0x4c request, look up the requested bindery
object and set property, and return up to 32 related object IDs from the set
property value segments. Support the Novell last-seen cursor convention where
0xffffffff starts a new scan and subsequent calls continue after the last
returned object ID.
Add a small nwdbm helper for listing set-property members while preserving the
existing bindery property read-right checks. Reject wildcard object names with
the documented illegal-wildcard completion code.
Add the missing NCP 21 message service endpoints for disabling/enabling
broadcast reception and for the newer send/get broadcast message calls.
Track a per-connection broadcast_disabled flag and use a shared helper for
storing pending broadcast messages and notifying the target nwconn process.
The old NCP 21/00 send path now uses the same helper as the newer NCP 21/10
path.
Also improve UNKNOWN FUNCTION logging in nwconn.c by including the NCP type,
function and, where available, subfunction. This makes future missing-endpoint
logs easier to map back to SDK/NCP documentation.
Based on the existing MARS-NWE message handling, the old lwared broadcast
implementation, and the Novell WebSDK message service layouts.
