[OE-core] [RFC PATCH 0/3] Machine/tune files overhaul

[Richard Purdie]

We talked a bit about what might be needed to overhaul the machine/tune
config files to improve their usability, feature control and various
other things.

I've been experimenting locally with the following patchset. Its sent
based against poky since it requires a bitbake change and I also tested
beagleboard specifically and this was the easiest way to do it.
Obviously these can be split out easily enough.

The reason a bitbake change was needed was so that the "contains"
functionality could be used in core variables before base.bbclass is
loaded.

The patches themselves have further details about what they change and
why. The transition for this could be a little tricky but is dectable
when it hasn't happened by looking if TUNE_PKGARCH is set. Its easy to
add a check for that and error.

I've not completed the machine/tune files conversion preferring to
discuss the patches at this point before going any further.

Cheers,

Richard