Properly detect Qt versions of directories
Properly detect Qt versions of directories

 * Detection of Qt versions from a makefile failed on windows
   when calling qmake without the drive letter. Make this work.

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