DDSXTY14 — Clarify whether the algorithm to compute KeyHash is specific to XTYPES

In 7.6.8 'Interoperability of Keyed Topics' it states:

As described in [RTPS] Clause 9.6.3.8, “KeyHash (PID_KEY_HASH)”, the key hash for a given object of a keyed type is obtained by first serializing the values of the key members in their declaration order. The algorithm described in that clause shall be amended as described below.

It is not clear whether the intent is that this modification impacts only implementors of the DDS-XTYPES or whether it is intended as a change in RTPS (which would require an issue filed on the DDSI-RTPS specification).