linkedhash-list: Relicense under LGPLv2+

[Bruno Haible]

I need to use the module 'clean-temp' in a library under GPLv2+ (namely,
GNU libffcall). One of the dependencies is the module 'linkedhash-list'.

I am the main contributor of the files of this module
  lib/gl_linkedhash_list.h
  lib/gl_linkedhash_list.c
  lib/gl_anyhash1.h
  lib/gl_anyhash2.h
  lib/gl_anyhash_primes.h
  lib/gl_anylinked_list1.h
  lib/gl_anylinked_list2.h
Most contributions by Ralf Wildenhues, Paul Eggert, Pádraig Brady, Akim
Demaille were mechanical changes, that are not copyrightable. Only one
change to lib/gl_anylinked_list2.h, by Paul
https://git.savannah.gnu.org/gitweb/?p=gnulib.git;a=commitdiff;h=16f6a8d8d81cc93745a24c0fb89caab2c383ae3c
is not.

Paul, can I have your approval to relicense this change under LGPLv2+ ?
So that I can then change this module's license.


2021-03-21  Bruno Haible  <bruno@clisp.org>

        linkedhash-list: Relicense under LGPLv2+.
        * modules/linkedhash-list (License): Change to LGPLv2+.

diff --git a/modules/linkedhash-list b/modules/linkedhash-list
index 0db6eb9..4274a83 100644
--- a/modules/linkedhash-list
+++ b/modules/linkedhash-list
@@ -24,7 +24,7 @@ Include:
 "gl_linkedhash_list.h"
 
 License:
-GPL
+LGPLv2+
 
 Maintainer:
 all