better compile-time messages for string functors

[Jarrett Billingsley]

On Sun, Feb 1, 2009 at 4:01 AM, Max Samukha
<samukha at voliacable.com.removethis> wrote:
> static assert should at least print the location of the instantiating
> code or better the entire backtrace. This has been asked for several
> times.

The code to do this is already in the frontend, DMD and it used to do
it.  It's just been disabled.  LDC already prints template
instantiation traces.