[Pkg-kde-extras] Bug#865999: exiv2: Please package exiv2 0.26

[Michael Stone]

exiv2 is now up to 0.27.2, and contains some major usability 
enhancements (e.g., the ability for the user to override lens detection) 
which have knock-on impacts to other packages (e.g., lensfun and all the 
programs which depend on that library). Getting an updated package into 
unstable would be very helpful in moving a lot of other photo processing 
software forward.