main/apr-util: enable iconv

subversion needs to convert to and from utf8 and it will fail to do so
if we disable iconv.

main/apr-util/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=apr-util
 pkgver=1.5.4
-pkgrel=0
+pkgrel=1
 pkgdesc="The Apache Portable Runtime Utility Library"
 url="http://apr.apache.org/"
 arch="all"
@@ -28,7 +28,6 @@ build() {
 		--with-pgsql \
 		--with-sqlite3 \
 		--with-berkeley-db \
-		--without-iconv \
 		--without-sqlite2 \
 		--without-gdbm \
 		|| return 1