Re: hash: provide hash_xinitialize

[Bruno Haible]

Hi Akim,

> Note that the hash module claims LGPLv2+, but the header of hash.[ch] is 
> about GPLv3+.

This is explained here:
https://www.gnu.org/software/gnulib/manual/html_node/Gnulib-licensing.html

The gnulib-tool option --lgpl=2 will put LGPLv2+ headers on the files, for
people who use the modules to build an LGPLv2+ package.

> Thanks for the hint; below is my updated proposal (which passes its test :).

Looks perfect.

> Also, contrary to the case of xconcat-filename, I have not put hash.h in the
> Files of xhash, because I see hash.h as a part of hash, not xhash.

Either way is fine.

> And I shamelessly decided to put the maintenance burden on Jim's shoulders.

Don't be shy :)

Bruno