Not referencing them caused them to be missing from the source packages.
This also moves all files that were in different dirs under the common
additional-files dir.
* Renamed recipe and its folder to "slimevolley" as that is the name under
PROVIDES. Hopefully that makes it finally installable from HDS.
* Added a vector icon rdef and I-O-M file.
* Added a patch putting the settings file into B_USER_SETTINGS_DIRECTORY.
