[xmonad] A patch for X.A.GroupNavigation to not rely on containers 0.3.0.0

[Don Stewart]

vogt.adam:
> * On Friday, May 14 2010, Norbert Zeh wrote:
> 
> >Hi folks,
> >
> >I'm attaching a patch that implements the two problematic functions
> >Seq.filter and Seq.breakl in X.A.GroupNavigation from scratch.  So this
> >should compile also on a vanilla ghc < 6.12.  Since I only have ghc
> >6.12, I wasn't able to test whether this compiles with ghc < 6.12, only
> >that the module still works.
> >
> >Cheers,
> >Norbert
> 
> I've applied this: it's not sensible to leave the repo broken, as it's
> apparent that such doesn't elicit any more responses. Patches can still
> be rolled back if some other solution turns out to be preferable.
> 

Thanks.