postgresql: update to version 9.6.4

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

libs/postgresql/Makefile

@@ -5,8 +5,8 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=postgresql
-PKG_VERSION:=9.6.3
-PKG_RELEASE:=3
+PKG_VERSION:=9.6.4
+PKG_RELEASE:=1
 PKG_MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
 PKG_LICENSE:=PostgreSQL
 
@@ -16,7 +16,7 @@ PKG_SOURCE_URL:=\
 	http://ftp.postgresql.org/pub/source/v$(PKG_VERSION) \
 	ftp://ftp.postgresql.org/pub/source/v$(PKG_VERSION)
 
-PKG_HASH:=1645b3736901f6d854e695a937389e68ff2066ce0cde9d73919d6ab7c995b9c6
+PKG_HASH:=2b3ab16d82e21cead54c08b95ce3ac480696944a68603b6c11b3205b7376ce13
 
 PKG_USE_MIPS16:=0
 PKG_FIXUP:=autoreconf