[OE-core] Performance datapoint - impact of static libs

[Phil Blundell]

> So static libs add an extra ~30mins of processing (7%) and ~5 mins to
> the overall build time. Not as much of a gain as I'd have liked but
> interesting none the less.

Do you know how many packages actually respect the --disable-static
flag?  I don't think (e)glibc does, for example, which is a bit of a
shame since it obviously has one of the largest build times.

p.