New git branch to run test on Mac OS X + travis-ci.
Use homebrew.
Too heavy installing haskell-platform with brew.
Add --verbose option for brew.
Try "brew install haskell-platform --verbose".
Add haskell packages needed for build Ajhc.
cabal-install is lighter than haskell-platform on travis-ci.
List up Mac OS X pkgs.
Try to use haskell-platform packed as binary package.
New cabal-setup target.
Test to cabal install from Hackage DB.
Set cabal bin path.
Come back .travis.yml for Ubuntu.