backport.pl: Relax the vetoes parser.
backport.pl: Relax the vetoes parser.

* tools/dist/backport.pl
  (handle_entry): Allow an arbitrary amount of whitespace in front of vetoes.

git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@1570044 13f79535-47bb-0310-9956-ffa450edef68

YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion