another 2.1.0 compile error

[Greg Woods]

On Tue, 2008-09-09 at 18:54 +0100, A.L.M.Buxey at lboro.ac.uk wrote:

> generally, its blindingly obvious when you see something like
> 
> Error - libfoo.h missing
> 
> you think, hmmm, i dont have an include.

But if libfoo.h actually exists in the source tree (as in the case of
ltdl.h), then it's not so blindingly obvious that the problem is a
missing -devel package rather than a configuration/compilation issue.

--Greg