Make SVN::Look::proplist method work (fix regexp).

The split in proplist should take output from svn proplist --verbose,
which looks like this on svn version 1.6 and 1.8:

 -----------------------------
Properties on 'foo':
  svn:mime-type
    text/plain
  svn:blarney
    text/plain
 -----------------------------

 and parse it into  list whose elements are:

 -----------------------------
Properties on 'foo':
svn:mime-type
text/plain
svn:blarney
text/plain
 -----------------------------

The method then goes on and discards the first element of the list and
the remaining are chomped and used to create the hash.