Log Message:
-----------
Document the existence of the socket lock file under unix_socket_directory,
which is perhaps not a terribly good spot for it but there doesn't seem to be
a better place. Also add a source-code comment pointing out a couple reasons
for having a separate lock file. Per suggestion from Greg Smith.
Modified Files:
--------------
pgsql/doc/src/sgml:
config.sgml (r1.308 -> r1.309)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml?r1=1.308&r2=1.309)
pgsql/src/backend/libpq:
pqcomm.c (r1.212 -> r1.213)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/libpq/pqcomm.c?r1=1.212&r2=1.213)