community/bogofilter: Update config_guess

Bogofilter is not building on ppc64le because it uses an old
config.guess. Updating it.

community/bogofilter/APKBUILD

@@ -15,6 +15,12 @@ subpackages="$pkgname-doc"
 source="http://downloads.sourceforge.net/project/bogofilter/bogofilter-stable/${pkgname}-${pkgver}/${pkgname}-${pkgver}.tar.bz2"
 
 builddir=${srcdir}/${pkgname}-${pkgver}
+
+prepare() {
+	default_prepare || return 1
+	update_config_guess || return 1
+}
+
 build() {
        cd "$builddir"
         ./configure --prefix=/usr \