qstringbuilder: more logic optimizations
qstringbuilder: more logic optimizations

Drop original QStringBuilder class, rename QStringBuilderPair to
QStringBuilder. Put everything except the QLatin1Literal class and
the global operator%() in a private namespace.

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