[Sheepdog] [PATCH] configure: add urcu into configure

[Liu Yuan]

On 05/08/2012 04:32 PM, Liu Yuan wrote:

> It is suppoed to be used by sheepfs. Though sheep doesn't necessarily
> need this library, its well implemented atomic operation header will
> be put good use for other sheep code.
> 
> To use atomic header, just add this in the source:
> 
> #include <urcu/uatomic.h>
> 
> And its API used as uatomic_xxx().
> 
> We can get the lib dev file by
> $ sudo apt-get install liburcu-dev
> 
> or compile it from the git source:
> git://git.lttng.org/userspace-rcu.git


Applied these two patches.

Thanks,
Yuan