[parrot/parrot] 13f3cf: warnings cleanup

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/parrot/parrot
  Commit: 13f3cf5eeb0629555ac512713d21a87c9c0b6870
      https://github.com/parrot/parrot/commit/13f3cf5eeb0629555ac512713d21a87c9c0b6870
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2012-09-03 (Mon, 03 Sep 2012)

  Changed paths:
    M config/auto/warnings.pm

  Log Message:
  -----------
  warnings cleanup

Remove already by -Wall and -Wextra implied gcc/clang warnings,
for a shorter cc cmdline.