Fix supported gdb versions in Qt Creator Manual.
Fix supported gdb versions in Qt Creator Manual.

Task-number: QTCREATORBUG-81
Reviewed-by: Friedemann Kleint

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