[PATCH] Revision 1297676 broke --list option of command line tests

Hi all,

Revision 1297676 by hwright broke the command line tests' --list option (and
probably, some other interfaces): the options dict no longer contains verbose
option as --verbose handler was changed from 'store_true' to 'callback'. The
attached patch fixes it by reintroducing options.verbose.

[[[
* subversion/tests/cmdline/svntest/main.py
  (_create_parser): Set options.verbose to False by default, override with
                    True from set_log_debug() callback.
]]]

Regards,
Alexey.