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.
* Referring the current haiku version explicitly is not needed, since
the RequiresUpdater takes care of setting the version of Haiku used
for building a package.
* W6 is now building
* Moved to haiku-games
* Source package needs review: for some reason there are multiple
source folders... Not sure if the $sourceDir2 is correctly used.
waddlesplash