* io.c (rb_cloexec_fcntl_dupfd): Fix failures in
  bootstrap_test/test_io.rb.  NativeClient does not support F_DUPFD
  but supports dup2(2).

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38683 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Fix failures on btest for NativeClient.
* bootstraptest/runner.rb (nacl?): New method to distinguish NaCl
  corss build.

* bootstraptest/test_io.rb: Skip unsupported operations.

* bootstraptest/test_literal.rb: ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38684 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-01-04

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@38685 b2dd03c8-39d4-4d8f-98ff-823fe69b080e