src/transfers.py: Follow toplevel symbolic links when gathering

files to send.

Previous behavior was to never follow links, under any conditions.

Now if the file selection contains a symbolic link, the link will
be followed, and the linked-to files will be sent in place of
the link.

This does not alter any existing behavior with links inside of
folders - these will never be followed, and the link itself will
be sent instead.

Fixes: #212

src/transfers.py

@@ -388,7 +388,7 @@ def process_folder(folder_uri, top_dir):
                 file = Gio.File.new_for_uri(uri)
                 top_dir_basenames.append(file.get_basename())
 
-                info = file.query_info(infos, Gio.FileQueryInfoFlags.NOFOLLOW_SYMLINKS, None)
+                info = file.query_info(infos, Gio.FileQueryInfoFlags.NONE, None)
                 basename = file.get_basename()
                 if len(uri_list) == 1:
                     op.mime_if_single = info.get_attribute_string(Gio.FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE)