[parrot/parrot] bb97c5: [cage] Move -Wformat to --cage #1165

[GitHub]

  Branch: refs/heads/smoke-me/Wformat-gh1165
  Home:   https://github.com/parrot/parrot
  Commit: bb97c57152bfd345785dd1853f440d35f62c0bdf
      https://github.com/parrot/parrot/commit/bb97c57152bfd345785dd1853f440d35f62c0bdf
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2015-01-02 (Fri, 02 Jan 2015)

  Changed paths:
    M ChangeLog
    M config/auto/warnings.pm

  Log Message:
  -----------
  [cage] Move -Wformat to --cage #1165

also add potential (nyi on gcc)
-Wsuggest-attribute=returns_nonnull, -Wsuggest-attribute=warn_unused_result,
-Wsuggest-attribute=hot to --cage