libbsd: Argument list too long

[Chris Johns]

On 15/06/2016 18:17, Chris Johns wrote:
> My understand is we get to decide. I am happy to see if adding this to
> the rtems_waf support can work and so it becomes a configuration
> parameter for libbsd to rtems_waf. If RTEMS supports clang in the future
> then rtems_waf can be taught to handle that case as well.

I have added long command support to rtems_waf and updated libbsd so it 
builds cleanly on MSYS2 on Windows10.

Please make sure you 'git submodule update rtems_waf'.

Chris