Make all V2 MDP interface calls take a __whence argument
mdp_recv() always sets error before returning -1, does not set
errno=0 otherwise
mdp_recv() does not log errors on EINTR or EAGAIN (EWOULDBLOCK)
mdp_recv() sets errno=EOVERFLOW if local socket name is too long
mdp_recv() sets errno=EBADMSG if malformed or spurious packet
received
Remove redundant mdp_recv() error logging from "mdp ping" and
"config sync" and several "id" commands
Make logMessage() -- wrapper around vlogMessage() -- an inline
function and remove redundant conditional level != LOG_LEVEL_SILENT
Move logString() into log_util.c, refactor so outer loop now iterates
over lines in buffer, rather than over all log outputs
Rename log_backtrace() to logBacktrace() for consistency
Document __NOWHENCE__ value
Configurable rules file path: mdp.filter_rules_path
Add filter rules parsing code, add filtering to outgoing as well as
incoming packets
New test script: tests/mdp with two test cases
Improve test defs: new execute_servald() function
Widen MDP port number format from 8 to ten chars to accommodate leading
"0x"
Ensure that timestamp always advances by at least one second every time
the config file is modified, add test case
Refactor test defs: detecting started HTTPD is not specific to Rhizome
Refactor struct file_meta and associated functions into "io.h" and io.c
Add various strbuf helper functions for formatting struct timespec
and struct file_meta to assist debug logging
Packet stats now exclude duplicate pong replies
With <count> arg, exits immediately once a pong has been received for
every ping, unless new --wait-for-duplicates option given
Routing tests for unreliable links now assert all pongs received and
very few duplicates
Now the keyring is opened and seeded before the server daemon process is
forked, and any keyring error prevents the server from starting
No longer necessary to pass a (cli_parsed*) argument to server()
