* Mercurial snapshot, fixing the following security issues:
- coders/tiff.c: remove unintended double-charging for memory resource,
- magick/pixel_cache.c: use resource limited memory allocator,
- InverseAffineMatrix(): avoid possible division by zero or absurdly
extreme scaling.
* Add upstream metadata.
* Update watch file.
* Update packaging bits.
[ Helmut Grohne <helmut@subdivi.de> ]
* Reduce Build-Depends (closes: #980721):
+ Drop unused libexif-dev.
+ Annotate sharutils with <!nocheck> as uudecode is conditionally used in
d/rules.
+ Annotate gsfonts with <!nocheck> as it is only used in unit tests.
+ Drop unused transfig as d/rules passes --without-frozenpaths.
+ Drop unused libltdl-dev as d/rules passes --without-modules.