QmlEngine:  handling breakpoint insertions/removals
QmlEngine:  handling breakpoint insertions/removals

Reviewed-by: hjk

bakaiadam/collaborative_qt_creator,pcacjr/qt-creator,bakaiadam/collaborative_qt_creator,bakaiadam/collaborative_qt_creator,darksylinc/qt-creator,yinyunqiao/qtcreator,KDAB/KDAB-Creator,ostash/qt-creator-i18n-uk,jonnor/qt-creator,richardmg/qtcreator,Distrotech/qtcreator,dmik/qt-creator-os2,KDE/android-qt-creator,omniacreator/qtcreator,azat/qtcreator,kuba1/qtcreator,martyone/sailfish-qtcreator,maui-packages/qt-creator,richardmg/qtcreator,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,martyone/sailfish-qtcreator,colede/qtcreator,hdweiss/qt-creator-visualizer,colede/qtcreator,amyvmiwei/qt-creator,sandsmark/qtcreator-minimap,martyone/sailfish-qtcreator,azat/qtcreator,KDAB/KDAB-Creator,pcacjr/qt-creator,syntheticpp/qt-creator,bakaiadam/collaborative_qt_creator,duythanhphan/qt-creator,sandsmark/qtcreator-minimap,darksylinc/qt-creator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,colede/qtcreator,xianian/qt-creator,martyone/sailfish-qtcreator,darksylinc/qt-creator,xianian/qt-creator,hdweiss/qt-creator-visualizer,martyone/sailfish-qtcreator,Distrotech/qtcreator,colede/qtcreator,duythanhphan/qt-creator,kuba1/qtcreator,farseerri/git_code,omniacreator/qtcreator,KDAB/KDAB-Creator,hdweiss/qt-creator-visualizer,kuba1/qtcreator,maui-packages/qt-creator,renatofilho/QtCreator,richardmg/qtcreator,malikcjm/qtcreator,richardmg/qtcreator,danimo/qt-creator,xianian/qt-creator,yinyunqiao/qtcreator,darksylinc/qt-creator,amyvmiwei/qt-creator,xianian/qt-creator,kuba1/qtcreator,farseerri/git_code,ostash/qt-creator-i18n-uk,dmik/qt-creator-os2,jonnor/qt-creator,AltarBeastiful/qt-creator,duythanhphan/qt-creator,KDAB/KDAB-Creator,sandsmark/qtcreator-minimap,KDE/android-qt-creator,xianian/qt-creator,malikcjm/qtcreator,amyvmiwei/qt-creator,sandsmark/qtcreator-minimap,danimo/qt-creator,danimo/qt-creator,colede/qtcreator,malikcjm/qtcreator,xianian/qt-creator,bakaiadam/collaborative_qt_creator,ostash/qt-creator-i18n-uk,martyone/sailfish-qtcreator,maui-packages/qt-creator,Distrotech/qtcreator,azat/qtcreator,darksylinc/qt-creator,darksylinc/qt-creator,dmik/qt-creator-os2,farseerri/git_code,omniacreator/qtcreator,farseerri/git_code,KDE/android-qt-creator,azat/qtcreator,syntheticpp/qt-creator,amyvmiwei/qt-creator,yinyunqiao/qtcreator,syntheticpp/qt-creator,pcacjr/qt-creator,colede/qtcreator,dmik/qt-creator-os2,omniacreator/qtcreator,pcacjr/qt-creator,farseerri/git_code,malikcjm/qtcreator,AltarBeastiful/qt-creator,kuba1/qtcreator,renatofilho/QtCreator,ostash/qt-creator-i18n-uk,omniacreator/qtcreator,sandsmark/qtcreator-minimap,duythanhphan/qt-creator,danimo/qt-creator,jonnor/qt-creator,KDAB/KDAB-Creator,jonnor/qt-creator,jonnor/qt-creator,pcacjr/qt-creator,farseerri/git_code,bakaiadam/collaborative_qt_creator,Distrotech/qtcreator,xianian/qt-creator,xianian/qt-creator,KDE/android-qt-creator,danimo/qt-creator,ostash/qt-creator-i18n-uk,ostash/qt-creator-i18n-uk,darksylinc/qt-creator,richardmg/qtcreator,omniacreator/qtcreator,kuba1/qtcreator,xianian/qt-creator,malikcjm/qtcreator,kuba1/qtcreator,amyvmiwei/qt-creator,renatofilho/QtCreator,danimo/qt-creator,duythanhphan/qt-creator,hdweiss/qt-creator-visualizer,dmik/qt-creator-os2,malikcjm/qtcreator,Distrotech/qtcreator,colede/qtcreator,jonnor/qt-creator,syntheticpp/qt-creator,renatofilho/QtCreator,danimo/qt-creator,omniacreator/qtcreator,richardmg/qtcreator,pcacjr/qt-creator,pcacjr/qt-creator,duythanhphan/qt-creator,KDE/android-qt-creator,bakaiadam/collaborative_qt_creator,maui-packages/qt-creator,ostash/qt-creator-i18n-uk,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,yinyunqiao/qtcreator,dmik/qt-creator-os2,martyone/sailfish-qtcreator,farseerri/git_code,AltarBeastiful/qt-creator,KDE/android-qt-creator,hdweiss/qt-creator-visualizer,renatofilho/QtCreator,maui-packages/qt-creator,dmik/qt-creator-os2,yinyunqiao/qtcreator,farseerri/git_code,syntheticpp/qt-creator,Distrotech/qtcreator,hdweiss/qt-creator-visualizer,sandsmark/qtcreator-minimap,KDE/android-qt-creator,amyvmiwei/qt-creator,KDAB/KDAB-Creator,danimo/qt-creator,Distrotech/qtcreator,kuba1/qtcreator,KDE/android-qt-creator,kuba1/qtcreator,yinyunqiao/qtcreator,azat/qtcreator,darksylinc/qt-creator,maui-packages/qt-creator,duythanhphan/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,syntheticpp/qt-creator,maui-packages/qt-creator,amyvmiwei/qt-creator,richardmg/qtcreator,amyvmiwei/qt-creator,azat/qtcreator,malikcjm/qtcreator,yinyunqiao/qtcreator,syntheticpp/qt-creator,renatofilho/QtCreator