* backport r32579, r32581, r32587 by akr and r32588 by kazu.

r32579:

* io.c (rb_update_max_fd): new function.

* internal.h (rb_update_max_fd): declare rb_update_max_fd.

* thread_pthread.c (rb_thread_create_timer_thread): update max fd when
  timer thread pipe is created.

r32581:

* io.c (UPDATE_MAXFD): removed.

r32587:

* include/ruby/intern.h (rb_update_max_fd): declaration moved from
  internal.h.

* file.c: ditto.

* io.c: call rb_update_max_fd for each new fds.

* process.c: ditto.

* random.c: ditto.

* ruby.c: ditto.

* ext/io/console/console.c: ditto.

* ext/openssl/ossl_bio.c: ditto.

* ext/pty/pty.c: ditto.

* ext/socket/init.c: ditto.

* ext/socket/socket.c: ditto.

* ext/socket/ancdata.c: ditto.

* ext/socket/unixsocket.c: ditto.

r32588:

* io.c (rb_update_max_fd): remove parentheses. they are not in
  macro.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@32591 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ruby.c

@@ -1527,6 +1527,7 @@ load_file_internal(VALUE arg)
 	if ((fd = open(fname, mode)) < 0) {
 	    rb_load_fail(fname);
 	}
+        rb_update_max_fd(fd);
 
 	f = rb_io_fdopen(fd, mode, fname);
     }