After several reviews on the initial contributed ebuild, I ended up adding language and documentation support on my own. No unneeded translation files; if it’s not in your LINGUAS, it won’t get installed.
About the documentation, I managed to modify the ebuild so that it does not install any documentation at all if you have ‘-doc’, even though the default behavior is to install it all. On the other hand, if you turn on the ‘doc’ USE flag, you will be forced to have the english documentation installed, however you will not be forced to install the german or french documentation unless you really need it, of course.
This application will not work correctly with versions of kde-base/kdelibs lower than 3.5.5 that were compiled with the ‘debug’ USE flag. Although there is a patch out there that fixes the problems with lower versions of kde-base/kdelibs, I did not add it and thus I set need kde-3.5.5. The main reason is that the ebuild just hit the tree (it’s not stable) and the latest unstable version of kde is 3.5.5.
KBackup is a program that allows you to back up any directories or files and you can find it under app-backup/kbackup with the initial version 0.5.1.