Send the correct version string to InspIRCd servers

transport/jsonrpc: Fix format argument type mismatch warning

nickserv/multimark: Fix const discard warnings

protocol/inspircd: Allow all METADATA accountname messages to set the internal account name of a user

protocol/inspircd: Allow all METADATA accountname messages to set the internal account name of a user

Fixes #308

Add channel output to flag lines in FLAGS command

A simple change to add the name of the channel to each flag line output for the FLAGS command. The advantage of this is that it makes it possible for a bot to be able to read the output of the command - without the #channel output it's not really possible to tell which channel a line in the flag response is concerning. With this change it is easy to key them - e.g. http://ur1.ca/i4hgr

nickserv/enforce: Only login user to target account if they weren't already.

Also fixes a minor oversight in commit 9942cab1 where the user would not
be properly logged out.

nickserv/enforce: make REGAIN login *you* rather than the target.

Previously, the change to make REGAIN identify as well would login the
user previously using the regained nick.

Multiple marks per nick

saslserv: Use service_get_log_target() in sasl_logcommand().

This avoids inconsistency with logcommand().

Both mechanisms have serious design flaws which make them insecure.  To fix the
design flaws would make both mechanisms incompatible with current implementations,
and provide little-to-no gain over using PLAIN in a TLS channel instead.

Thusly, we drop support for them.

chanserv/flags: Require single parameter starting with '+' for filtered flag listing

This avoids triggering the filtered flag listing when trying to view or
modify flags on a hostmask, exttarget or group.

Also add an error message, and allow opping services (should have no
effect).

svs can be NULL when we are logging /stats <letter> services. so check
for that case before looking up ->logtarget.

Change OPERTYPE to say "Service" instead of "Services"