Expose PQbackendPID() through walreceiver API

Peter Eisentraut <peter@eisentraut.org>

Commit: ee4ac46c8eb289bc200d0fd682e75d11b4c55b5a
Author: Peter Eisentraut <peter@eisentraut.org>
Date: 2020-01-14T13:40:41Z
Releases: 13.0
Expose PQbackendPID() through walreceiver API

This will be used by a subsequent patch.

Reviewed-by: Masahiko Sawada <masahiko.sawada@2ndquadrant.com>
Discussion: https://www.postgresql.org/message-id/CA%2Bfd4k4dM0iEPLxyVyme2RAFsn8SUgrNtBJOu81YqTY4V%2BnqZA%40mail.gmail.com

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