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.
The quotes around $binDir and $prefix are not needed in the
definitions of commandBinDir. There are over 120 recipes which
define commandBinDir, and *most* of them don't have quotes in
the lines defining commandBinDir and commandSuffix.
15 recipes were not consistent with the wiki. Now they are.
$secondaryArchSuffix (as well as $commandSuffix) should not be
used in the call to defineDebugInfoPackage. Obviously, this
latent bug did not affect any primary arch nor the x86 2nd arch
because commandSuffix is set to the empty string in that case.
