[Patch] Break the Demangle -> Support dependency

[Reid Kleckner via llvm-commits]

Do we intend to make this demangler asynch signal safe, i.e. not call
malloc at all? If so, I vote keep the custom allocator. If not, I'd say
nuke it.

On Tue, Sep 6, 2016 at 1:13 PM, Rafael Espíndola <rafael.espindola at gmail.com
> wrote:

> Attached are two ways of fixing the dependency.
>
> One just deletes the custom allocator. The other duplicates some
> compiler check macros. The macros will hopefully get smaller when we
> drop support for MSVC 2013, but will not go away completely.
>
> Cheers,
> Rafael
>
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