Revert "Trying binary install only again..."

This reverts commit 9dc29b00bf3dd82c513776936c62c171e93d2253.
Revert "Try shell magic instead of the download_binary action."

This reverts commit 856e68305f7e26520ada2b129d582d8a37863dcb.

Feedback from Dave Bouvier:

    I should mention that environment variables that are set in one
    shell_command action will not persist to subsequent shell_command actions,
    due to the way Fabric handles local and remote environment settings.

That means this won't work, unless I squeeze things into multi-line shell commands maybe...