Set Thread.report_on_exception=true by default to report exceptions in Threads
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61183 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Set Thread.report_on_exception=true by default to report exceptions in Threads
by report_on_exception = true.
Thread.report_on_exception and Thread#report_on_exception.
report_on_exception for tests expecting no extra output.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@61183 b2dd03c8-39d4-4d8f-98ff-823fe69b080e