[perl6/specs] aec781: Add notes $?USAGE was renamed to $*USAGE

[email protected] (GitHub) Sat, 23 Sep 2017 09:03:26 -0700
Newsgroups perl.perl6.language
Message-ID <59c685ce837b3_1d2893fa9b3e3fc3c78127@hookshot-fe-6dbb0c4.cp1-iad.github.net.mail>
  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: aec781246cf93a0cdbbd00902fe5471e9694053d
      https://github.com/perl6/specs/commit/aec781246cf93a0cdbbd00902fe5471e9694053d
  Author: Zoffix Znet <[email protected]>
  Date:   2017-09-23 (Sat, 23 Sep 2017)

  Changed paths:
    M S06-routines.pod
    M S28-special-names.pod

  Log Message:
  -----------
  Add notes $?USAGE was renamed to $*USAGE

Rakudo impl: https://github.com/rakudo/rakudo/commit/0b15f6728a
Spec: https://github.com/perl6/roast/commit/04b03b1d40
Docs: https://github.com/perl6/doc/commit/9849f0945f