Last step for issue #1004: Turn on cancellation support.
Last step for issue #1004: Turn on cancellation support.

* subversion/clients/cmdline/main.c
  (cancelled, sig_int, check_cancel): Uncomment these.
  (main): Uncomment the cancellation initialization code.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@845439 13f79535-47bb-0310-9956-ffa450edef68

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