Log Message:
jbig2dec: Update to 0.17

pkgsrc changes:
 - Update HOMEPAGE

Changes:
Version 0.17 (2019 October 1)
 * Updated documentation with accurate contact information.
 * Moved version number to jbig2.h, and adapted configure
   correspondingly. Added pkg-config file to be installed
   along side library. Added run-time check of version
   number so that the correct header is used with the matching
   binary library.
 * Bug fixes.