build dev docs in doc/html-dev instead of doc/api/html
build dev docs in doc/html-dev instead of doc/api/html

Change-Id: I42c13004e6a80b27c0f1690c76b35a0d40cee6ad
Reviewed-on: http://codereview.qt.nokia.com/289
Reviewed-by: Oswald Buddenhagen <6a8868beda3e139b5ac22b2534a23d3e6ba81819@nokia.com>

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