libxshmfence port fails build

[Jung-uk Kim]

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On 2014-04-14 20:49:57 -0400, Neil Schroeder wrote:
> I think I picked a bad day to go from 10-STABLE to 11-CURRENT then
> fully rebuild all my ports...
> 
> 
> In file included from xshmfence_alloc.c:27: In file included from
> ./xshmfenceint.h:33: ./xshmfence_futex.h:40:39: error: use of
> undeclared identifier 'INT_MAX' --- xshmfence_futex.lo --- In file
> included from xshmfence_futex.c:27: In file included from
> ./xshmfenceint.h:33: ./xshmfence_futex.h:40:39: error: use of
> undeclared identifier 'INT_MAX' --- xshmfence_alloc.lo --- return
> sys_futex(addr, UMTX_OP_WAKE, INT_MAX); ^ --- xshmfence_futex.lo
> --- return sys_futex(addr, UMTX_OP_WAKE, INT_MAX); ^
> 
> I am not too bad with general hackery of dependencies and makefiles
> but this I'm not sure how to address.
> 
> Any ideas fine people?

I fixed it last night.  Please try again.

Jung-uk Kim
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