rtems.git build broken(?) for --enable-rtemsbsp=psim with samples: multiple definition of `_POSIX_Once_Lock'

[Chris Johns]

Nick Withers wrote:
> On Sat, 2013-08-17 at 11:42 -0500, Joel Sherrill wrote:
>>
>> Haven't tested this beyond noting that the build continues.
>> Please let us know if this works.
>
> Yup - that seems to have done the trick, and I've tested with a
> POSIX-init application.
>

I have a patch pending some more testing. It also includes the changes 
Sebastian requested.

Chris