Fix fuzzy matching in core_who.•••Previously this code would consider requests with fields but no
flags as fuzzy. This is incorrect as users can make requests like:
WHO Sadie %n
Reported by @ilbelkyr.
Fix a few issues with SERVLIST.•••- Implement support for service type matching based on the service
oper type. This isn't the same as irc2 but its close enough.
- Fix erroneously sending the mask in the <mask> field. This field
is for the service name mask not the service distribution mask.