Don't make the signal-pipe non-blocking.
Don't make the signal-pipe non-blocking.

This is an attempt to make it run on MIPS. The non-blocking is not
needed here.

BUG=https://code.google.com/p/dart/issues/detail?id=17826
R=sgjesse@google.com

Review URL: https://codereview.chromium.org//220863003

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@34594 260f80e4-7a28-3924-810f-c04153c831b5

dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk