this obsoletes the series at
id:20170521124821.23924-1-david@tethera.net
Compared to the previous series, it contains a leak fix for
g_mime_stream_stdout_new(), the actual leak fixes promised in the last
patch of the previous series, and modifications to some of the
multipart tests so that headers are no longer expected when printing
multipart bodies; as discussed in
id:878tlpyyfi.fsf@tethera.net
and confirmed with gmime upstream, that behaviour can be considered a
bug in gmime-2.6, and goes away in gmime-3.0