Replace the .bzr directory with something else

It is necessart to replace the .bzr directory that bazar uses with something else, i.e.: .fzr, because it will get in the way for example if we want to store a bazar branch of another project inside fileZaar . We will face two problems trying to acomplish this. One is that bazaar has the '.bzr ' directory HARDODED in the entrire library and the latter is that if we change this, we are going to lose compatibility with other repositories. One solution is to make .bzr the default and provide an alternative to change it.