[dev] conflics with libpq

[Manlio Perillo]

Hi.

I'm writing an extension module that uses the postgresql library.
I have found that there is a conflict with libpq headers.

If I include <libpq-fe.h> before nginx headers, then nginx will not work.

In the request handler, r->method has wrong values
(as an example 1189949249, and it randomly increments by 1) and when I 
use the log functions, I get a SIGIO.


If I include nginx headers first, all works fine, but I think that it 
may be interesting to understand why this is happening.


Manlio Perillo