* added mutt client for #132. Currently, `make install` ignores errors,
  since it tries to install to /usr/local/share/man/man5 which is owned
  by root.

* added google protobuf (needed by mosh client)

* added mosh for #63. Although it is provided natively via
  https://chrome.google.com/webstore/detail/mosh/ooiklbnjmhbcgemelgfhaeaocllobloj

* added boost v1.59.0 needed by MySQL (yet to be built)

* added apache httpd for #615. Currently, `make install` ignores errors,
  since it tries to install to /usr/local/share/man/man8 which is owned by
  root.