#328 hfst-proc --weight-classes fix borked --xerox output

[Kevin Brubeck Unhammer]

meriponi_ for example the english morphology yields for input 'Every':
meriponi_ Every   Every[ART]
meriponi_ Every
meriponi_ Every   Every[ADJ]+ADJ
meriponi_ Every
meriponi_ Every   Eve[N]+ERY[N/N]+N
meriponi_ Every
meriponi_ Every   Ev[N]+ERY[N/N]+N
meriponi_ Every

meriponi_ earlier it was:
meriponi_ Every
meriponi_ Every
meriponi_ Every   Ev[N]+ERY[N/N]+N
meriponi_ Every   Eve[N]+ERY[N/N]+N
meriponi_ Every   Every[ADJ]+ADJ

meriponi_ spectre: the changes from revision 4426 to 4427 in files
          tools/src/hfst-proc/formatter.cc and formatter.h changed the
          behaviour of hfst-proc