CVS commit by gebauer: 

fix for #41684, #43519 and #42576

* remove obsolete event filter in KNComposer::Editor
* added processedText() in KNComposer::Editor which
  replaces the old textLine() method. processedText() splits
  wraped paragraphs into single lines and expands tabs
* fixed evil bug in the GNSKA-check-code that caused #42576


  M +97 -94    kncomposer.cpp   1.142
  M +2 -4      kncomposer.h   1.43