Import fixes made in filter-dkim

Import commit filter from dkim signer

Finally fix big memory leak

End va_copy

Plug a memory leak. Major leak still pending

Don't botter writing if we're pending EV_WRITE. While here, rename ev to stdoutev

Make sure we call event_init only once

Initialize event_init so we can use it during smtp_register*

This should be && and not ||

Add a custom printf function that's not susceptible to EAGAIN.

Add support for filter-data

Make the linedup a little less calculation-intensive

Replace getline with custom function. Getline doesn't play nice with nonblocking io

Logging an unmodified line works better

Move the debugging info, so we don't log every damn line in the body

Temporarily add extra debugging info

Switch from err.h to log.h

Add license header

Add support for filtering datalines

missing newline

Add support for smtp-in link-disconnect reports

Make the interface more to what a programmer would expect. Kill some useless code in the process

Apparently _IOLBF doesn't always flush on lines. Force with fflush(3). Also, we support multiple requests at a time, remove fake non-support

Remove RB trees, since we probably let the client implement their timeouts

Unneeded brackets