Ruby

• thread_pthread.c (thread_timer): ignore unknown errno.
  (we observed that select(2) was canceled by errno=514 on
  boron == Linux/Xen environment)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32325 b2dd03c8-39d4-4d8f-98ff-823fe69b080e