DDS12 — Clarify the meaning of locally

Summary:
On 2-94 section 2.1.2.5.5 (SampleInfo Class) the description of publication_handle states that it identifies locally the DataWriter that modified the instance.

Clarify that locally means the instance_handle from the builtin Publication DataReader belonging to the Participant of the DataReader from which the sample is read.

Proposed Resolution:

Proposed Revised Text:

In section 2.1.2.5.5 SampleInfo Class, replace the bullet:
the publication_handle that identifies locally the DataWriter that modified the instance.

With the bullet:
the publication_handle that identifies locally the DataWriter that modified the instance. The publication_handle is the same InstanceHandle_t that is returned by the operation get_matched_publications on the DataReader and can also be used as a parameter to the DataReader operation get_matched_publication_data.

In section 2.1.2.5.3.33 get_matched_publications after the first paragraph add the paragraph.
The handles returned in the 'publication_handles' list are the ones that are used by the DDS implementation to locally identify the corresponding matched DataWriter. These handles match the ones that appear in the 'instance_handle' field of the SampleInfo when reading the "DCPSPublications" builtin topic.

In section 2.1.2.5.3.33 get_matched_publications after the first paragraph add the paragraph:
The handles returned in the 'subscription_handles' list are the ones that are used by the DDS implementation to locally identify the corresponding matched DataReader. These handles match the ones that appear in the 'instance_handle' field of the SampleInfo when reading the "DCPSSubscriptions" builtin topic.

Add the state clarification