dropbear: update to 2014.64 & don't pollute filesystem with systemd service

srcpkgs/dropbear/template

@@ -1,6 +1,6 @@
 # Template file for 'dropbear'
 pkgname=dropbear
-version=2014.63
+version=2014.64
 revision=1
 build_style="gnu-configure"
 configure_args="--sbindir=/usr/bin --enable-zlib"
@@ -11,9 +11,14 @@ maintainer="Ypnose <linuxienATlegtuxDOTorg>"
 license="MIT"
 homepage="https://matt.ucc.asn.au/dropbear/dropbear.html"
 distfiles="https://matt.ucc.asn.au/${pkgname}/releases/${pkgname}-${version}.tar.bz2"
-checksum=595992de432ba586a0e7e191bbb1ad587727678bb3e345b018c395b8c55b57ae
+checksum=866156b464bfbc914b24fde3d7d87faa6c7fc2d2c5a6c5164ac52dbb2e1ad170
+
+# Package build options
+build_options="systemd"
 
 post_install() {
-	vinstall ${FILESDIR}/dropbear.service 644 usr/lib/systemd/system/
-	vinstall LICENSE 644 usr/share/licenses/${pkgname}
+	if [ "$build_option_systemd" ]; then
+		vinstall ${FILESDIR}/dropbear.service 644 usr/lib/systemd/system/
+	fi
+	vlicense LICENSE
 }