Log Message:
archivers/arqiver: update to 0.12.0

V0.12.0
--------
 * Made it possible to modify files inside archives.
 * Added an option for using system icons.
 * Made sure that "No" is the default button of question dialogs (Qt \ 
seems to
   have a minor problem in this regard).
 * Don't start extraction if the archive is removed.
 * Made viewing/extracting of single files much faster with bsdtar.
 * Consistently prevent the parent extraction folder from being hidden (for it
   not to be missed by the user).
 * Fixed a bug in removal of files from archives.
 * Make sure that ed-like special characters are escaped when making path
   patterns with bsdtar.
 * Added a workaround for a nasty bug in bsdtar about start backslashes and the
   option "--strip-components".
 * Added new mimetype names of `shared-mime-info` ≥ 2.3.