New LDAP C API

[Love Hörnquist Åstrand]

> I've already invited folks from the Fedora Directory Server team to  
> participate in this new design, and I'd like to get input from you  
> folks too. Anybody who's done a significant amount of work with  
> LDAP has probably cursed the API more than a few times. Let's fix it.

I don't like "4. char *'s should be avoided, use struct bervals more  
extensively"
if it means removing char * that in practice always is strings. I  
don't mind
getting output data in struct { void *, size_t ); elements, its when  
its input
it sucks that you have wrapp everything in a struct foo just to pass  
it it.

I really don't like the name of "struct bervals".

"5. "proper" error handling"

You should seriously consider using something like the heimdal  
krb5_get_error_string
api to get out sane error messages (but with added error code).

I don't see malloc happy as a big problem.

Love