[ITA] giflib

[Lemures Lemniscati]

Hi!


ITA for giflib, which has been maintained by Yaakov [1].


Now, the latest upstream of giflib is 5.2.1 [2].


A new candidate cygport file is placed at [3].
And, it's been tested on Cygwin Scallywag CI [4].


Some files for building come from Fedora 36:
  https://src.fedoraproject.org/rpms/giflib/raw/f36/f/CMakeLists.txt
  https://src.fedoraproject.org/rpms/giflib/raw/f36/f/giflib_coverity.patch
  https://src.fedoraproject.org/rpms/giflib/raw/f36/f/giflib_html-docs-consistent-ids.patch
  https://src.fedoraproject.org/rpms/giflib/raw/f36/f/giflib_quantize.patch


Generated package files are placed at [5] and [6]:

* giflib-5.2.1-1.tar.xz
* libgif-devel-5.2.1-1.tar.xz
* libgif7-5.2.1-1.tar.xz

* giflib-5.2.1-1-src.tar.xz
* giflib-debuginfo-5.2.1-1.tar.xz


[1]: https://cygwin.com/git/?p=git/cygwin-packages/giflib.git
[2]: https://sourceforge.net/projects/giflib/files/
[3]: https://github.com/cygwin-lem/giflib-cygport/tree/n_5.2.1-1
[4]: https://cygwin.com/cgi-bin2/jobs.cgi?id=4253
[5]: https://cygwin-lem.github.io/giflib-cygport/
[6]: https://github.com/cygwin-lem/giflib-cygport/tree/n_5.2.1-1_gh-pages


Regards, 

Lem