Add new OID alias type regnamespace

Catalog version bumped

Kyotaro HORIGUCHI

src/backend/utils/cache/catcache.c

@@ -151,6 +151,7 @@ GetCCHashEqFuncs(Oid keytype, PGFunction *hashfunc, RegProcedure *eqfunc)
 		case REGCONFIGOID:
 		case REGDICTIONARYOID:
 		case REGROLEOID:
+		case REGNAMESPACEOID:
 			*hashfunc = hashoid;
 
 			*eqfunc = F_OIDEQ;