[metapost] memory problem

[Taco Hoekwater]

Denis Roegel wrote:
> 
> But this doesn't answer the slow solving of a large number
> of independent equations. I think we should work on a non-metaobj
> example and focus on it.

Agreed. This is core functionality, and as such, its running time
should be x^3. But I do not expect to have time to work on this
until after eurotex, so unless someone else steps in, it will have
to wait for a while.

Cheers, Taco