filter out compile error messages involving _error_

[Don Clugston]

On 10/09/12 02:31, Jonathan M Davis wrote:
> On Monday, September 10, 2012 02:16:19 Timon Gehr wrote:
>> Don has expressed the desire to weed those out completely.
>
> If he can do it in a way that leaves in all of the necessary information, then
> great, but you need to be able to know what the instantiation chain was.
>
> - Jonathan M Davis

Yes, that's the idea. It's pretty much working for CTFE now (you get a 
complete call stack, with no spurious error messages).