New package easyoptions and Bazaar fix in makepkg

**EasyOptions**

[EasyOptions](https://github.com/renatosilva/easyoptions) makes it easy parsing options in Bash and Ruby scripts. For example:

* https://github.com/renatosilva/pidgin/blob/master/build/translations.sh
* https://github.com/renatosilva/pidgin/blob/master/build/winbuild.sh
* https://github.com/renatosilva/scripts/blob/master/bzrgrep.rb

**Bazaar fix in makepkg**

This is because makepkg was requiring the cloned repository to be removed across builds, because it was erroneously thinking that the repository is not a real clone of `$source`. More info in the commit message.