Fix the test suite's parsing of "svn status" output. It went wrong when the
working revision field was "?", e.g. on an item whose status is "missing".
No tests seem to have been adversely affected by this.
* subversion/tests/cmdline/svntest/tree.py
(build_tree_from_status): Skip white space before the working revision
field with the regex " +" rather than accidentally eating other
characters with the regex " [^0-9-]*".
git-svn-id: http://svn.apache.org/repos/asf/subversion/trunk/subversion/tests/cmdline@873679 13f79535-47bb-0310-9956-ffa450edef68