merge revision(s) 46233: [Backport #9878]
* signal.c (ruby_signal): should return either `old.sa_sigaction` or `old.sa_handler`, depending on whether `SA_SIGINFO` is set in `old.sa_flags`, because they may not be a union. [ruby-core:62836] [Bug #9878]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@46583 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 46233: [Backport #9878]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@46583 b2dd03c8-39d4-4d8f-98ff-823fe69b080e