[SECURITY] Fedora 27 Update: exiv2-0.26-12.fc27

A command line utility to access image metadata, allowing one to: * print the Exif metadata of Jpeg images as summary info, interpreted value s, or the plain data for each tag * print the Iptc metadata of Jpeg images * print the Jpeg comment of Jpeg images * set, add and delete Exif and Iptc metadata of Jpeg images * adjust the Exif timestamp (that’s how it all started…) * rename Exif image files according to the Exif timestamp * extract, insert and delete Exif metadata (including thumbnails), Iptc metadata and Jpeg comments