x86_64 is used as a baseline: the "x86_64" entry, whatever status it has,
is transformed into "all", and then the other entries in ARCHITECTURES
either dropped or rearranged appropriately.
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.
