Sometimes certain servers don't send a argument for modes which it
declared as ones which need an argument.
No released version is affected.
Close#1684
Some servers may send a colon even if the last parameter doesn't need it, currently this leads to issues with permission/mode tracking, as the core doesn't handle the colon properly.
This fix replaces reconstructing the parameter string with just passing a vector of the relevant parameters to CChan::SetModes() and adds overrides for CChan::SetModes() and CChan::ModeChange() that accept the vector instead.
Clean up uses of old CModeMessage::GetModes()
This also alters PutClient such that the CMessage variant handles
sending messages, rather than the CString variant. As a side bonus, this
gives callers better information on whether the message was sent to the
client. Additionally, it eliminates the need for a hook to let modules
set the tags sent to a client, as that can now be done inside
OnSendToClientMessage.
