Log Message:
Update perl to version 5.24.0.

Pkgsrc changes:
 * Add candidate fix from https://rt.cpan.org/Public/Bug/Display.html?id=72467
 * Remove patches which have been integrated upstream
 * Rename and re-mould some patches which required adjustments

http://perlnews.org/2016/05/perl-5-24-released/ has pointer to
more details and says:

May 9 2016
Perl 5.24.0 has been released.

You can read about the changes which include:

    Postfix dereferencing is no longer experimental
    Unicode 8.0 is now supported
    The autoderef feature has been removed

Perl 5.24.0 represents approximately 11 months of development since
Perl 5.22.0 and contains approximately 360,000 lines of changes
across 1,800 files from 77 authors.