Merge the before and after attach client code into one in client.c

(instead of two in tmux.c and client.c).

server.c

@@ -106,11 +106,11 @@ server_create_socket(void)
 
 /* Fork new server. */
 int
-server_start(char *path)
+server_start(void)
 {
 	struct window_pane	*wp;
 	int	 		 pair[2];
-	char			 rpathbuf[MAXPATHLEN], *cause;
+	char			*cause;
 	struct timeval		 tv;
 	u_int			 i;
 
@@ -155,12 +155,8 @@ server_start(char *path)
 	utf8_build();
 
 	start_time = time(NULL);
-	socket_path = path;
-
-	if (realpath(socket_path, rpathbuf) == NULL)
-		strlcpy(rpathbuf, socket_path, sizeof rpathbuf);
 	log_debug("socket path %s", socket_path);
-	setproctitle("server (%s)", rpathbuf);
+	setproctitle("server (%s)", socket_path);
 
 	server_fd = server_create_socket();
 	server_client_create(pair[1]);