Fix svnmerge.py to work for those with non-English locales set in their environment.
Fix svnmerge.py to work for those with non-English locales set in
their environment.

* contrib/client-side/svnmerge.py
  Set LC_ALL -- rather than LC_MESSAGES -- to C, as the Subversion
  command-line doesn't acknowledge LC_MESSAGES in svn_cmdline_init().

Found by: Phillipe Bruhat <book@cpan.org>
          Thomas Heller <theller@ctypes.org>


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@863379 13f79535-47bb-0310-9956-ffa450edef68

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