[OE-core] image.bbclass: Update outdated reference to "export IMAGE_BASENAME"

[Richard Purdie]

On Fri, 2012-07-27 at 14:53 +0200, Andrea Adami wrote:

> 
> By the way,
> 
> we have followed pedissequally and re-introduced 'export
> IMAGE_BASENAME' [1] when we adapted our initramfs image for oe-core,
> even though we had built whitout until then, both in oe-classic and in
> oe-core. 
> 
> Regards
> 
> Andrea
> 
> [1]
> http://cgit.openembedded.org/meta-handheld/commit/?id=3021e1fc380067666a63fa5b2bdfc5fd16282973

At this point I don't know if this is necessary or not. It might be
unnecessary but we would need someone to confirm that before we remove
it.

Cheers,

Richard