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.
Marked x86 as non-working.
Slightly improved description.
No need to increase the revision for these changes.
Removed filer-1.0.0beta3.recipe as it didn't build anyway and possibly
interferes with building filer-1.0.0, because it's picked up first
when doing a "haikuporter filer".
* 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.
waddlesplash