Can no longer build OSX druntime unittest for master

[Steven Schveighoffer via Digitalmars-d-learn]

On 5/24/16 2:11 PM, Steven Schveighoffer wrote:
> I get these errors:
>
> Undefined symbols for architecture x86_64:
>    "dyld_enumerate_tlv_storage(void (dyld_tlv_states, dyld_tlv_info
> const*) block_pointer)", referenced from:
>        _d_dyld_getTLSRange(void*, void**, unsigned long*) in osx_tls.o
>    "__d_dyld_getTLSRange", referenced from:
>        _D2rt19sections_osx_x86_6413initTLSRangesFZAv in test_runner.o
>    "_getErrno", referenced from:
>        _D4core4stdc5errno5errnoFNbNdNiNeZi in test_runner.o
>    "_setErrno", referenced from:
>        _D4core4stdc5errno5errnoFNbNdNiNeiZi in test_runner.o
> ld: symbol(s) not found for architecture x86_64
>
> What happened?

Also cannot build phobos unittests.

I think it has something to do with this: 
https://github.com/dlang/druntime/pull/1523

-Steve