[Patch] Remove flag_objc-sjlj_exceptions as a User control, move ObjC exception mechanism choices to gcc/objc/

[Mike Stump]

On Nov 30, 2011, at 3:32 PM, Iain Sandoe <developer@sandoe-acoustics.co.uk 
 > wrote:
> This removes the flag_objc_sjlj_exceptions (or, more correctly,  
> localizes its effect to the ObjC FEs).

> OK for trunk?

Ok.