gtk-layer-shell: revbump for gtk+3

Also enable building tests if needed.

srcpkgs/gtk-layer-shell/template

@@ -1,7 +1,7 @@
 # Template file for 'gtk-layer-shell'
 pkgname=gtk-layer-shell
 version=0.5.1
-revision=1
+revision=2
 build_style=meson
 build_helper="gir"
 hostmakedepends="gobject-introspection pkg-config wayland-devel"
@@ -13,6 +13,10 @@ homepage="https://github.com/wmww/gtk-layer-shell"
 distfiles="https://github.com/wmww/gtk-layer-shell/archive/v${version}.tar.gz"
 checksum=d77e42dff69e2cf1eee4489fb7db465d4e33be48e67ee0ca653238de0ab882ba
 
+if [ "$XBPS_CHECK_PKGS" ]; then
+	configure_args+=" -Dtests=true"
+fi
+
 post_install() {
 	vlicense LICENSE_MIT.txt
 }