doc/sasl.txt: drop dead links, add links to IRCv3 spec and relevant SASL RFCs
doc/sasl.txt: forgot to wrap lines and sort references
Removed comment from src/modules.c that states certain function were moved into a file that no longer exists. (Circa ~2002)
Fix crash when there are two blacklist hosts without intervening reason.

This is invalid configuration; the first host is supposed to be ignored.
Explicitly pass the current time to deactivate_conf().

Some places depend on the ban not being destroyed.
server: Remove two dead stores.
server: Don't read beyond the bounds of ServerInfo.ip and ServerInfo.ip6.
Gitignore vim swap files.
libratbox: Add comment that case fallthrough is deliberate.
bandb: Don't apply empty ban list when bandb starts sending bans.

When bandb sends the ban list, it first sends 'C', then all bans and
finally 'F'. Only when 'F' is sent is ircd supposed to apply the bans.
Because of a missing break, 'C' also did 'F', clearing the ircd active
permanent bans until bandb sent 'F'.

The effect is pretty limited because having bandb send the ban list via
/rehash bans is uncommon and most bans will be enforced when reset.
tools: Remove Hybrid 6 conversion tools.

Hybrid 6 is old enough that the conversion tools can go away now.
They are for I and K lines; the ircd.conf converter was already removed.

This removes compiler/analyzer warnings about these tools.
ban: Fix build breakage.

A normal 'make' did not rebuild m_ban.c even though dependencies had
changed.