replace TRACE_IMSGSIZE with TRACE_MPROC and use log_trace() in mproc.c
instead of log_debug().
set filter_name for debug messages from procname
properly log errors on mproc pipes.
log and exit if a filter closed its socket
stupid typo
- add PROC_CLIENT type
- disable warning in control process when client closes the connection
- improve reporting of proc names in filter code
first shot at a dnsbl filter
fix filter-dnsbl build when asr is not in libc
enable build of backends and filters