Log Message:
-----------
Improve lock level choices in pg_shdepend.c. Noticed by Tom Lane.
Modified Files:
--------------
pgsql/src/backend/catalog:
pg_shdepend.c (r1.22 -> r1.23)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/pg_shdepend.c?r1=1.22&r2=1.23)