use long_ary to suppress warning

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40057 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Suppress warnings

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40058 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* test/ruby/envutil.rb (assert_separately): stop_auto_run of
  Test::Unit::Runner to prevent auto runner use ARGV.

* test/ruby/envutil.rb (assert_separately): add $: to separate process.

* test/ruby/envutil.rb (assert_separately): fail if stderr is not
  empty and ignore_stderr is false.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40059 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Use assert_separately to speed up on test-all

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40060 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Add ignore_stderr because it outputs "circular require" warnings

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40061 b2dd03c8-39d4-4d8f-98ff-823fe69b080e