+/** Find the first matching MOTD block for a user.
+ * If the user is remote, always use remote MOTD.
+ * Otherwise, if there is a hostmask- or class-based MOTD that matches
+ * the user, use it.
+ * Otherwise, use the local MOTD.
+ * @param[in] cptr Client to find MOTD for.
+ * @return Pointer to first matching MOTD for the client.