Log Message:-----------Mention libpq.rc.in is now the file to update for releases.
Modified Files:-------------- pgsql/src/tools: RELEASE_CHANGES (r1.51 -> r1.52) (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/tools/RELEASE_CHANGES.diff?r1=1.51&r2=1.52)
