Merge branch 'mm/mediawiki-file-attachments'

"mediawiki" remote helper (in contrib/) learned to handle file attachments. * mm/mediawiki-file-attachments: git-remote-mediawiki: improve support for non-English Wikis git-remote-mediawiki: import "File:" attachments git-remote-mediawiki: split get_mw_pages into smaller functions git-remote-mediawiki: send "File:" attachments to a remote wiki git-remote-mediawiki: don't "use encoding 'utf8';" git-remote-mediawiki: don't compute the diff when getting commit message