More work on issue #1510: cvs2svn must handle vendor branches.
More work on issue #1510: cvs2svn must handle vendor branches.

* tools/cvs2svn/cvs2svn.py
  (CollectData.__init__): Document that default_branch is a number.
  (CollectData.rev_to_branch_name): New name for get_branch_name, to
    more accurately describe its function.  All callers changed.
  (CollectData.set_revision_info): Get default_branch_name correctly.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@848675 13f79535-47bb-0310-9956-ffa450edef68

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