add include guard for qtcreator.pri
add include guard for qtcreator.pri

this also covers the higher-level includes for libs and plugins

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