[oe] Disable objc for arm uclibc

[Phil Blundell]

On Fri, 2008-08-15 at 00:41 -0700, Khem Raj wrote:
> Hi
> 
> I am hitting a build issue while building gcc 4.2.4 for arm uclibc.
> This patch disables objc selectively only for arm uclibc and avr
> change is also merged in.

What's the issue?  I can't think of any fundamental reason why ObjC
shouldn't be able to work with uclibc.  It would be nice to fix it
rather than just turning it off.

p.