* subversion/libsvn_subr/stream.c
  (_FILE_DISPOSITION_INFO,
   FileDispositionInfo): Define when not using a recent enough SDK.
  (svn_stream__install_delete): Add an optimized codepath for WIN32.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1577292 13f79535-47bb-0310-9956-ffa450edef68