Update to 2.24.1. Add XMP support using exempi.

Version 2.24.1
--------------

* Improvements to the JPEG metadata reader (Felix Riemann)
* Fix progress reporting when images only need copying during "Save As" (Felix Riemann)
* Fix some critical warnings (Claudio Saavedra, Vincent Untz)
* Do not open some images at 98% or 99% (Felix Riemann)
* Install metadata related headers properly (Pierre-Luc Beaudoin)
* Avoid possible markup "injection attack" (Martin Olsson)
* Docs improvements.

Bug fixes:

  #530447, Eye of GNOME opens images resized at 98% or 99% zoom (Felix Riemann)
  #555940, eog is vulnerable to pango injection attack :-) (Martin Olsson)
  #555942, Not all public EXIF API headers are installed (Pierre-Luc Beaudoin)

New and updated translations:

- Alexander Shopov [bg]
- Adrian Guni邸 [cs]
- Pierros Papadeas [el]
- Takeshi AIHANA [ja]
- Changwoo Ryu [ko]
- Jovan Naumovski [mk]
- Wouter Bolsterlee [nl]
- Vladimir Melo [pt_BR]
- Laurent Dhima [sq]
- Daniel Nylander [sv]

New and updated manual translations:

- Osama K, OsamaKhalid [ar]
- Mario Bl辰ttermann [de]
- Sira Nokyoongtong, Theppitak Karoonboonyanan [th]

(wiz)