[Dovecot] Dovecot 2.0.rc2 fd passing regression

[Tomi Vainio]

Hi,

I've tried to compile 2.0.rc2 and configure fails this which used to 
work or at least last time when I tried beta4.

> configure:19606: checking whether fd passing works
> configure:19680: cc -o conftest -xO4 -I./src/lib ./src/lib/fdpass.c -I/usr/sfw/include/mysql -I/usr/sfw/include -R/usr/sfw/lib:/usr/lib/sasl -L/usr/sfw/lib -L/usr/lib/sasl conftest.c -lrt -lnsl -lsocket  -lrt >&5
> ./src/lib/fdpass.c:
> "./src/lib/fdpass.c", line 100: incomplete struct/union/enum const_iovec: iov
> "./src/lib/fdpass.c", line 109: improper member use: iov_base
> "./src/lib/fdpass.c", line 109: warning: assignment type mismatch:
>         pointer to void "=" pointer to const void
> "./src/lib/fdpass.c", line 110: improper member use: iov_len
> cc: acomp failed for ./src/lib/fdpass.c
> conftest.c:

   Tomppa