Avoid symlink attacks on temporary files when the svnlook process has a liberal umask.
Avoid symlink attacks on temporary files when the svnlook process has a
liberal umask.

* subversion/svnlook/main.c (create_unique_tmpdir): Restrict directory
  permissions.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@855053 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion