[SECURITY] Fedora 25 Update: calibre-2.78.0-1.fc25

Calibre is meant to be a complete e-library solution. It includes library management, format conversion, news feeds to ebook conversion as well as e-book reader sync features. Calibre is primarily a ebook cataloging program. It manages your ebook collection for you. It is designed around the concept of the logical book, i.e. a single entry in the database that may correspond to ebooks in several formats. It also supports conversion to and from a dozen different ebook formats. Supported input formats are: MOBI, LIT, PRC, EPUB, CHM, ODT, HTML, CBR, CBZ, RTF, TXT, PDF and LRS.