Support file:// style repository URI on Windows.
Support file:// style repository URI on Windows.

* subversion/bindings/swig/ruby/test/util.rb
  (SvnTestUtil#setup_basic): Ensure the first "/" for repository path in
  file:// URI.

Suggested by: Joe Swatosh

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion