CVS commit by waba: 

* Revert previous KService changes
* Change algorithm for building offerlists (was 1990ms, is now 41ms)


  M +39 -16    kded/kbuildservicefactory.cpp   1.26
  M +9 -56     kio/kio/kservice.cpp   1.150
  M +3 -22     kio/kio/kservice.h   1.85
  M +75 -7     kio/kio/kservicetype.cpp   1.55
  M +18 -1     kio/kio/kservicetype.h   1.39