Blocked revisions 86168,86211,86300 via svnmerge

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  r86168 | hirokazu.yamamoto | 2010-11-05 00:21:59 +0900 (金, 05 11 2010) | 1 line

  Updated PC/VS8.0. (mainly to follow r86137: use temporary dir in make_buildinfo.c)
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  r86211 | hirokazu.yamamoto | 2010-11-06 02:24:13 +0900 (土, 06 11 2010) | 1 line

  Fixed socket_gethostname() on windows.
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  r86300 | hirokazu.yamamoto | 2010-11-07 23:29:26 +0900 (日, 07 11 2010) | 1 line

  Issue #6317: Now winsound.PlaySound only accepts unicode with MvL's approval.
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