Log Message:
-----------
Add a comment about the initial default value of max_stack_depth.
Modified Files:
--------------
pgsql/src/backend/utils/misc:
guc.c (r1.565 -> r1.566)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c?r1=1.565&r2=1.566)