CVS commit by kalle: 

Finally fixed Kroupware issue #113: Don't update if no change has been made.
Lots of operator==


  M +18 -0     alarm.cpp   1.8.2.1
  M +2 -0      alarm.h   1.9.2.1
  M +12 -1     attendee.cpp   1.8.2.1
  M +3 -1      attendee.h   1.7.2.1
  M +1 -3      calendarimap.cpp   1.1.2.23
  M +8 -0      duration.cpp   1.2.2.1
  M +2 -0      duration.h   1.2.2.1
  M +11 -1     event.cpp   1.11.2.1
  M +4 -1      event.h   1.12.2.1
  M +34 -0     incidence.cpp   1.29.2.1
  M +3 -1      incidence.h   1.24.2.1
  M +31 -0     incidencebase.cpp   1.11.2.2
  M +1 -0      incidencebase.h   1.6.2.1
  M +8 -1      journal.cpp   1.5.2.1
  M +2 -1      journal.h   1.7.2.1
  M +8 -0      person.cpp   1.3.2.1
  M +1 -0      person.h   1.2.2.1
  M +20 -0     recurrence.cpp   1.20.2.1
  M +14 -0     recurrence.h   1.17.2.1
  M +13 -1     todo.cpp   1.15.2.1
  M +2 -1      todo.h   1.12.2.1