Set '--simulate' if any of the printing options is given (fixes #3036)

That's what the help messages say.
Previously it would only set '--skip-download', which would write thumbnail,
descriptions or subtitles if they were requested (for example you may have set
'--write-thumbnail' in the config file).

youtube_dl/__init__.py

@@ -307,8 +307,8 @@ def _real_main(argv=None):
         'forceformat': opts.getformat,
         'forcejson': opts.dumpjson,
         'dump_single_json': opts.dump_single_json,
-        'simulate': opts.simulate,
-        'skip_download': (opts.skip_download or opts.simulate or any_printing),
+        'simulate': opts.simulate or any_printing,
+        'skip_download': opts.skip_download,
         'format': opts.format,
         'format_limit': opts.format_limit,
         'listformats': opts.listformats,