[parrot/parrot] 7227e6: appveyor: more msvc flags

[GitHub]

  Branch: refs/heads/smoke-me/appveyor
  Home:   https://github.com/parrot/parrot
  Commit: 7227e604493718c241c9f35d9e0453075ae12a41
      https://github.com/parrot/parrot/commit/7227e604493718c241c9f35d9e0453075ae12a41
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2015-12-14 (Mon, 14 Dec 2015)

  Changed paths:
    M appveyor.yml
    M tools/dev/appveyor-smoke.bat

  Log Message:
  -----------
  appveyor: more msvc flags

the smoker has a mingw perl, which we need to override manually