* subversion/tests/cmdline/svndumpfilter_tests.py   (dropped_but_not_renumbered_empty_revs): Increase explicit pipe buffer     size to avoid a deadlock that is reproducable on Windows after r1578670.
* subversion/tests/cmdline/svndumpfilter_tests.py
  (dropped_but_not_renumbered_empty_revs): Increase explicit pipe buffer
    size to avoid a deadlock that is reproducable on Windows after r1578670.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1578820 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion