Log Message:
Updated devel/p5-PPIx-Regexp to 0.051
-------------------------------------
0.051           2017-01-29      T. R. Wyant
  Support whitespace inside [] if /xx in effect.
    Starting with Perl 5.25.9, a space or tab appearing inside a bracketed
    character class is not significant if /xx is asserted.

  Further deprecate tokenizer method prior()

  Add 'provides' data to ExtUtils::MakeMaker output

  SOME unescaped litaral '{' removed in 5.025001.
    After '.', Unicode classes, and bracketed classes (including extended)
    they are still legal.

  Make /\b{/ an error
    Perl fails to parse the above, because once it sees the '\b{' it wants
    to find one of the extended boundary assertions (like \b{wb}), and
    declares an error when it does not. So we check for this and rebless the
    curly into an unknown token, not a literal.