pull up r20479 from trunk. The ticket numbers don't match because

pull up r20479 from trunk.  The ticket numbers don't match because
reported on the 1.6 branch.

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 r20479 | raeburn | 2008-06-26 20:31:59 -0400 (Thu, 26 Jun 2008) | 8 lines

 ticket: 5925
 status: open

 Don't do FD_SETSIZE check on Windows.
 Also, for form's sake, use closesocket instead of close inside the check.

 Kevin or Jeff, could you please verify that the code works again?

ticket: 6433
version_fixed: 1.6.4
status: resolved

git-svn-id: svn://anonsvn.mit.edu/krb5/branches/krb5-1-6@22442 dc483132-0cff-0310-8789-dd5450dbe970