[tex-live] md5.sumhexa unavailable in luatex from the pretest TL 2017

[Vít Novotný]

Hi,

I noticed that if I execute the following script:

    require"md5"
    print(md5.sum)
    print(md5.sumhexa)
    print(md5.crypt)
    print(md5.decrypt)
    print(md5.exor)

using the texlua binary from TL 2017 pretest, I receive the following
output:

    function: 0x5f3280
    nil
    function: 0x5f32e0
    function: 0x5f30c0
    function: 0x5f3430

instead of

    function: 0x5f2910
    function: 0x1cfdc30
    function: 0x5f2970
    function: 0x5f2760
    function: 0x5f2ac0

which is what I get with the texlua binary from TL 2016.

The `md5.sumhexa` method is a part of the md5 library interface [1] and
the luatex manual makes no mention about modifying the library. I can
easily work around the missing method in my package, but this seems as a
bug.

 [1]: http://www.inf.puc-rio.br/~roberto/md5/md5-5/md5.html

Best Regards,
Vít Novotný