[parrot/parrot] bc64d7: [config] omit -fpermissive on cygwin gcc

[GitHub]

  Branch: refs/heads/smoke-me/cygwin-fpermissive-gh1137
  Home:   https://github.com/parrot/parrot
  Commit: bc64d726188ab6037c42f25d7c0c4b097c87bc4a
      https://github.com/parrot/parrot/commit/bc64d726188ab6037c42f25d7c0c4b097c87bc4a
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2014-11-14 (Fri, 14 Nov 2014)

  Changed paths:
    M config/auto/warnings.pm

  Log Message:
  -----------
  [config] omit -fpermissive on cygwin gcc

Fixes GH #1137