Merge commit 'ab87af41'

* commit 'ab87af41':
  configure: Add proper weak dependency of avformat on network
Merged-by: James Almer <jamrial@gmail.com>

configure

@@ -3273,6 +3273,7 @@ avcodec_select="null_bsf"
 avdevice_deps="avformat avcodec avutil"
 avfilter_deps="avutil"
 avformat_deps="avcodec avutil"
+avformat_suggest="network"
 avresample_deps="avutil"
 postproc_deps="avutil gpl"
 swresample_deps="avutil"