fix some -Wstrict-prototypes warning

[Stefan Huehner]

On Thu, Jun 16, 2005 at 05:01:28PM -0400, Dimi Paun wrote:
> > next patch in series to remove -Wstrict-prototypes warnings.
> 
> Will we be able to ever turn this on by default?

I would welcome to enable some more checks in the default configuration,
but see below..

> If so, how far away are we?

Good question. Counting unique occurences of "warning: function
declaration isn't a prototype' i get 431 lines at present.