Gifsicle 1.69 release.

A C11 in-medias-res declaration made it in. Remove it.
Copyright year.
Update configury.
A misfeature in Gif_CopyColormap led to a bug.

Cropping an image copies its colormap. But copying its colormap
didn't copy the `haspixel` portion, which we needed. Fix this:
a function named `Copy` should copy something! Also add some
prophylactic code to prior uses of CopyColormap, in case people
were depending on that behavior. Problem reported when cropping
an image with local colormaps, by Alberto Nannini.

Gifsicle to v1.70.
Remove unnecessary file.

In this reconfigured repository, there are no symlinks to other sources.
Regularize licenses.

Requested by Francois Marier et al.
Fix license on merge.c.

Francois Marier noticed this too.
Fix two manpage dashes interpreted as hyphens
Merge pull request #1 from fmarier/manpage_hyphens

Fix two manpage dashes interpreted as hyphens
Combine .gitignores, remove obsolete .gitignores.
Update README.

And use Markdown.
Remove useless gdbinit.
Update Makefile to new version of automake.
Always report an error when combining --info and --batch.

Before we wouldn't always report an error. Frank Dana report.
Frame selections also apply in --batch mode.

Reported by LOU Yu Hong Leo.
Update NEWS (but don't release yet).
Avoid rounding errors in --resize.

Problem reported by Paul Kane.
To version 1.71.
Internal: Adjust Makefile.w32 configury to work for 64-bit Windows too.

And get rid of FAKE_INTTYPES_H; instead let's just error out.
And add some static assertions to check SIZEOF constants.
Add --fallback-delay option for GIFs with delay == 0

The --min-delay option raises the delay floor, but also raises the delay
of gifs with purposefully low values.

The --fallback-delay option allows setting a default value for GIFs that
do not specify a delay value without raising the minimum delay for _all_
GIFs displayed.

The --min-delay option takes precedence over the fallback value.