"make distcheck" failure

[Bruno Haible]

Hi Mohammad,

The CI reported a "make distcheck" failure. Without even seeing the log file,
I can already tell the cause: In the newest commit

        * pickles/crc16.pk: New pickle for 16-bit CRCs.
        * testsuite/poke.pickles/crc16-test.pk: New file.
        * testsuite/Makefile.am (EXTRA_DIST): Update.

a new test file 'crc16-test.pk' was added, that has a 'load crc16;'
statement. But that statement fails when building from the tarball,
since pickles/crc16.pk is not included in the tarball.

Bruno