main/postgresql: check if data directory is empty on setup

main/postgresql/APKBUILD

@@ -1,7 +1,7 @@
 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=postgresql
 pkgver=8.4.1
-pkgrel=0
+pkgrel=1
 pkgdesc="A sophisticated object-relational DBMS"
 url="http://www.postgresql.org/"
 license="BSD"
@@ -47,5 +47,5 @@ client() {
 
 
 md5sums="f2015af17bacbbfe140daf0d1067f9c9  postgresql-8.4.1.tar.bz2
-e4b13053dcbebdf2e59450b94bc27705  postgresql.initd
+794aa5e0ee00e6939505aeff527550c2  postgresql.initd
 6218755fde294b7d17b77d280a9c9106  postgresql.confd"

main/postgresql/postgresql.initd

@@ -98,6 +98,7 @@ reload() {
 
 setup() { 
 	ebegin "Creating a new PostgreSQL database cluster" 
+	rmdir "${PGDATA}" 2>/dev/null
 	if [ -d "${PGDATA}" ] ; then 
 		eend 1 "${PGDATA} already exist" 
 		return