protocol/inspircd: Ensure ircd-side topic lock state is always what we think it should be

Ignore CTCP messages that begin with space characters

This is consistent with chanserv/info: metadata is public by default
unless the PRIVATE flag is set.

The rationale is that access to private information about a channel
requires the +A flag; PRIVATE and PUBACL allow making adjustments to
what is considered private. With PRIVATE set, most info requires +A.

However, on channels with PUBACL set, we display the founder and
successor to everyone as they could just check the ACL themselves
anyway.

AKICK reasons and expiration might be considered private information;
the op-only part of the reason certainly is.

Note that it's still possible to see a list of AKICKed people via
/cs flags #channel +b while PUBACL is set.

perl api changes

In fact, require group founder access rather than just SET.

Fixes for bugs discovered by Coverity Scan

libathemecore/conf: Fix crash when receive_pass or send_pass does not exist, introduced in 25a1f71c

CID: 1238965 and 1238967

CID: 1238964

CID: 1238966

CID: 1238960

CID: 1238961

hostserv/request: Depend on hostserv/main to avoid crashes if it's not yet loaded