Fix #318: only show "[ OK ] Calling foo" progress for runparts ...

For all other run_parts() use-cases we just give the script control over
stdout/stderr to prevent clobbering ANSI color escape codes.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

src/plugin.c

@@ -208,7 +208,7 @@ void plugin_script_run(hook_point_t no)
 	strlcat(path, PLUGIN_HOOK_SCRIPTS_PATH, sizeof(path));
 	strlcat(path, hscript_paths[no] + 4, sizeof(path));
 
-	run_parts(path, NULL);
+	run_parts(path, NULL, 0);
 }
 #else
 void plugin_script_run(hook_point_t no)