Better handling of stdin/stdout/stderr

Better handling of stdin/stdout/stderr

When using stdout/stderr it is no longer necessary to explicitly
close the streams for the program to terminate. The automatic
close is handled by always closing the associated receive port
for write only streams when not waiting for any events. If a
close or error handler is installed for stdout/stderr these will
still keep the program alive.

For stdin better handling of the difference between sockets and
pipes have been immplemented. As a special case for stdin when
reading from a terminal the a POLLIN signal with 0 available
bytes is treated as end-of-file. This will trigger when pressing
ctrl-d in a terminal as POLLHUP is not set in that situation.

R=ager@google.com

BUG=
TEST=

Committed: https://code.google.com/p/dart/source/detail?r=1507

[Mads Ager (google), 2011-11-14 14:14:23]

LGTM

http://codereview.chromium.org/8533005/diff/2001/runtime/bin/socket_impl.dart
File runtime/bin/socket_impl.dart (left):

http://codereview.chromium.org/8533005/diff/2001/runtime/bin/socket_impl.dart...
runtime/bin/socket_impl.dart:103: if (_isListenSocket()) data |= (1 <<
_LISTENING_SOCKET);
Good catch. :)

http://codereview.chromium.org/8533005/diff/2001/tests/standalone/src/Timeout...
File tests/standalone/src/TimeoutTest.dart (right):

http://codereview.chromium.org/8533005/diff/2001/tests/standalone/src/Timeout...
tests/standalone/src/TimeoutTest.dart:8: new ReceivePort().receive((x, y) =>
null);
Thanks, that's simpler.