berkeleydb: bump to 5.3.21

Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/berkeleydb/berkeleydb.mk

@@ -3,7 +3,7 @@
 # berkeley db
 #
 #############################################################
-BERKELEYDB_VERSION = 5.3.15
+BERKELEYDB_VERSION = 5.3.21
 BERKELEYDB_SITE = http://download.oracle.com/berkeley-db
 BERKELEYDB_SOURCE = db-$(BERKELEYDB_VERSION).NC.tar.gz
 BERKELEYDB_SUBDIR = build_unix