Fix computation of local URL (file://) from local path, under Windows. Given an absolute path, it is not sufficient to replace backslashes with forward slashes, as an absolute path under Windows does not start with any slash, but rather the driver latter.
Fix computation of local URL (file://) from local path, under Windows. Given an
absolute path, it is not sufficient to replace backslashes with forward
slashes, as an absolute path under Windows does not start with any slash, but
rather the driver latter.

 * contrib/client-side/svnmerge_test.py:
   (abspath_to_url): New function.
   (TestCase_TestRepo.setUp): Use it.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@859698 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion