[Ruby 1.9.2-Backport#3932][Open] lib/un.rb (httpd): SIGQUIT and SIGHUP are not guaranteed to exist

Backport #3932: lib/un.rb (httpd): SIGQUIT and SIGHUP are not guaranteed
to exist.
http://redmine.ruby-lang.org/issues/show/3932

$B5/I<<T(B: Kazuhiro NISHIYAMA
$B%9%F!<%?%9(B: Open, $BM%@john(B: Normal

Windows $B$G(B 1.9.2-p0 $B$N(B un.rb $B$r;H$C$F(B httpd
$B$r<B9T$7$h$&$H$9$k$HF0$+$J$+$C$?$N$G(B r28944
$B$N%P%C%/%]!<%H$r$*4j$$$7$^$9!#(B

$B%A%1%C%H(B #3932 $B$,99?7$5$l$^$7$?!#(B (by Yuki S.)

$B%9%F!<%?%9(B Open$B$+$i(BClosed$B$KJQ99(B
$B?JD=(B % 0$B$+$i(B100$B$KJQ99(B

This issue was solved with changeset r29571.
Kazuhiro, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.