[Openembedded-architecture] Heads up on getVar/getVarFlags defaults

[Richard Purdie]

We've been working towards this for a while but I think the time has
come to finally make getVar/getVarFlag expand by default.

There are patches on the bitbake list and I'll queue them in master-
next for testing.

At the same time, it makes sense to remove the bb.data.XXX variants as
their API was a bit more suspect (getVarFlag didn't take an expansion
parameter). We've had these as deprecated for a while and conversion to
the d.XXX functions is trivial.

I haven't written a series removing the True defaults from the users of
the function but that will obviously follow.

If anyone objects to this, speak now!

Cheers,

Richard