Please post a new release of GKlib

[cponder]

The latest tag is from over 2 years ago:

METIS-v5.1.1-DistDGL-0.5
Sep 13, 2020

It's easier for scripts to download this than to use git operations, which require me to set up ssh-certificates and this is a big pain when I'm dealing with containers.
Also I want to have a reference to the same snapshot for repeatability. Using the head of the git-trunk can give a different snapshot each time.

[cponder]

I'd suggest you call it something like GKlib-5.1.2.tar.gz indicating that it's the GKlib and not be confused with it being a METIS release.

[gruenich]

@karypis Without such tag, it is difficult to create Linux package for METIS, as GKlib is a dependency but the tag name cannot be use as a sane version number.