Update qiv to 2.3.1.  Changes:

- Add desktop integration.
- Browse option now starts with first picture on command line.
- Fix direction of scrollwheel for next/previous image
- Center mouse cursor position in magnifying window
- Optimize libmagic calls
- Improve display of exif GPS tags
- New option --vikeys to allow for vi-style movement
- Disable screensaver and DPMS during slideshow
- Improvements to qiv-command.example (filename quoting, extract more
  EXIF infos)
- Fix possible segfaults when dealing with corrupt embedded color
  profiles.
- Do not segfault when "browse" option is called without a further
  argument.
- Fix magnifying window. Zoom factor of magnifying window can be
  changed by +/- keys.
- Make conditional rotate leave images that fit alone.
- Add --followlinks option to all symlinks to dirs.
- Fixed inconsistency with rotate option, add conditional rotation
- Add runtime option to display Exif information
- Add runtime option to toggle grab mode
- Add support for embedded color profiles in tiff
- Better fullscreen handling with multi monitors.  Xinerama is no
  longer needed.
- Notice when a mouse click makes the display-text disappear.
- Simplify image-move checking code and allow it to move an image farther.
- Add support for embedded color profiles in jpg
- Add color profile support via lcms2
- When using "--watch" option, make sure pic is not reloaded while still
  written.

(snj)