prefork: using POSIX::dup2 failed after a few million connections, so     close and reopen STDIN (S. Priebe)
prefork: using POSIX::dup2 failed after a few million connections, so 
   close and reopen STDIN (S. Priebe)


git-svn-id: 6e7a7971b1024e6b6028729f590d7800a6049a23@798 958fd67b-6ff1-0310-b445-bb7760255be9

gh/ghqp,gh/ghqp