Don't enforce usestrictprivmsg on TS6 IRCds and cache the value of usestrictprivmsg

data/example.conf

@@ -505,9 +505,7 @@ options
 	 * Nick@ServerName - e.g. NickServ@localhost.net. This should be used in
 	 * conjunction with IRCd aliases. This directive is optional.
 	 *
-	 * When using Bahamut, this option will NOT work if the uplink server is
-	 * configured as a services hub. The serviceshub option is not designed to
-	 * be used with Anope.
+	 * This option will have no effect on some IRCds, such as TS6 IRCds.
 	 */
 	#usestrictprivmsg = yes
 

include/config.h

@@ -102,6 +102,8 @@ namespace Configuration
 		Anope::string DefLanguage;
 		/* options:timeoutcheck */
 		time_t TimeoutCheck;
+		/* options:usestrictprivmsg */
+		bool UseStrictPrivmsg;
 
 		/* either "/msg " or "/" */
 		Anope::string StrictPrivmsg;

src/config.cpp

@@ -182,7 +182,8 @@ Conf::Conf() : Block("")
 
 	this->ReadTimeout = options->Get<time_t>("readtimeout");
 	this->UsePrivmsg = options->Get<bool>("useprivmsg");
-	this->StrictPrivmsg = !options->Get<bool>("usestrictprivmsg") ? "/msg " : "/";
+	this->UseStrictPrivmsg = options->Get<bool>("usestrictprivmsg");
+	this->StrictPrivmsg = !UseStrictPrivmsg ? "/msg " : "/";
 	{
 		std::vector<Anope::string> defaults;
 		spacesepstream(this->GetModule("nickserv")->Get<const Anope::string>("defaults")).GetTokens(defaults);

src/messages.cpp

@@ -300,7 +300,7 @@ void Privmsg::Run(MessageSource &source, const std::vector<Anope::string> &param
 			if (!servername.equals_ci(Me->GetName()))
 				return;
 		}
-		else if (Config->GetBlock("options")->Get<bool>("usestrictprivmsg"))
+		else if (!IRCD->RequiresID && Config->UseStrictPrivmsg)
 		{
 			const BotInfo *bi = BotInfo::Find(receiver);
 			if (!bi)