xbps-src: added 'clean' target to remove pkg build directory.

xbps-src/shutils/tmpl_funcs.sh.in

@@ -252,6 +252,19 @@ prepare_tmpl()
 	fi
 }
 
+remove_tmpl_wrksrc()
+{
+	local lwrksrc="$1"
+
+	if [ -z "$lwrksrc" -o ! -d "$lwrksrc" ]; then
+		return 1
+	fi
+
+	msg_normal "Cleaning '$pkgname' build directory... "
+	rm -rf $lwrksrc
+	return $?
+}
+
 set_tmpl_common_vars()
 {
 	[ -z "$pkgname" ] && return 1