[RFC] 64 bit format codes for pack() and unpack()

Hi list,

I would like to propose the addition of format codes for pack() and
unpack() to work with 64 bit integers.

Pierre suggested I create an RFC for this.

https://wiki.php.net/rfc/pack_unpack_64bit_formats

The RFC proposes both perl-compatible, and perl-incompatible codes,
however I think they all make sense for PHP.

Please review and discuss the proposed changes and see how you feel about them,

Thanks,

Leigh.

P.S @andrea your comments from the original thread are addressed in the RFC.