Log Message:
-----------
Document that shared_preload_libraries and local_preload_libraries
lowercase the library names, unless double-quoted.
Modified Files:
--------------
pgsql/doc/src/sgml:
config.sgml (r1.285 -> r1.286)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml?r1=1.285&r2=1.286)