* contrib/client-side/svnmerge/svnmerge.py   (display_revisions, command_table): add '--summarize' option,    pass it to 'svn diff'.
* contrib/client-side/svnmerge/svnmerge.py
  (display_revisions, command_table): add '--summarize' option,
   pass it to 'svn diff'.

Patch by: Archie Cobbs <archie@dellroad.org>
Review by: Giovanni Bajo <rasky@develer.com>
           Jon Schewe <jpschewe@mtu.net>


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@867422 13f79535-47bb-0310-9956-ffa450edef68

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