/**
* Add a base url. \see baseUrls
* \param url The base url for the repository.
+ * \note can change keepPackages,so change it after this call
*
* To recreate the base URLs list, use \ref setBaseUrl(const Url &) followed
* by addBaseUrl().
/**
* Clears current base URL list and adds \a url.
+ * \note can change keepPackages,so change it after this call
*/
RepoInfo & setBaseUrl( const Url &url );