+ Drop 03-spelling_fixes.patch and 40_fixtestsuite.diff.
+ Unfuzz and extend (for libutil addition)
  30_link_utils_dynamically.diff.
+ Do not ship gif standards in txt format with giflib-tools.
+ Update symbol file. Symbols which were only accidentally exported were
  removed. For consumption by giflib-tools a small (static) helper library
  (libutil) still provides the symbols.
+ Pass CC=$(CC) to dh_auto_build

Do not use temporary files in /tmp with a predefined name in testsuite.
This also fixes a testsuite error with parallel builds.

Drop 20_giflib_soname.patch and 25_giflib_mandir.patch.
Unfuzz 30_link_utils_dynamically.diff.

I am assuming NMUs did not feature big copyrightable changes.

(Unused, we have a symbol file.)

symbols-file-missing-build-depends-package-field

Renames internal symbol reallocarray

Refresh 03-spelling_fixes.patch.
Drop CVE-2016-3977.patch, included upstream.

Gbp-Dch: Ignore

Closes: #820526