[parrot/parrot] 61f914: [travis]: use brew cpanminus on osx

[GitHub]

  Branch: refs/heads/smoke-me/travis-osx+win
  Home:   https://github.com/parrot/parrot
  Commit: 61f91428419133e64d32310cf36457342fd9ab50
      https://github.com/parrot/parrot/commit/61f91428419133e64d32310cf36457342fd9ab50
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2015-12-13 (Sun, 13 Dec 2015)

  Changed paths:
    M .travis.yml

  Log Message:
  -----------
  [travis]: use brew cpanminus on osx


  Commit: cc57583ede3be98b425c04fad3841d92da8d185a
      https://github.com/parrot/parrot/commit/cc57583ede3be98b425c04fad3841d92da8d185a
  Author: Reini Urban <rurban at cpanel.net>
  Date:   2015-12-13 (Sun, 13 Dec 2015)

  Changed paths:
    M config/auto/cpu/i386/test_gcc_cmpxchg_c.in
    M include/parrot/compiler.h
    M src/atomic/gcc_x86.c

  Log Message:
  -----------
  fix apple clang --optimize

define WORDSIZE there

See https://travis-ci.org/parrot/parrot/jobs/96623113
darwin clang failed the PARROT_HAS_AMD64_GCC_CMPXCHG test


Compare: https://github.com/parrot/parrot/compare/b4dba6572119...cc57583ede3b