Make svnmerge.py easier to use when copying and pasting revision numbers by stripping any leading 'r' characters before converting the string to an integer.
Make svnmerge.py easier to use when copying and pasting revision
numbers by stripping any leading 'r' characters before converting the
string to an integer.

* contrib/client-side/svnmerge/svnmerge.py
  (RevisionSet.__init__):
    Use lstrip('r') on the input revision strings before passing it to
    int().

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion