utils.qbs: fix ProductModule
utils.qbs: fix ProductModule

ProductModule items in derived products override the ProductModule
items in the base product.

Change-Id: I3f325d1ae52b24c75b5aebe5b9cc0ceb7622dcc6
Reviewed-by: Christian Kandeler <3aa99dcdd3f0cac61fb81c2a11771c0cc2497607@digia.com>

amyvmiwei/qt-creator,xianian/qt-creator,Distrotech/qtcreator,darksylinc/qt-creator,Distrotech/qtcreator,malikcjm/qtcreator,martyone/sailfish-qtcreator,colede/qtcreator,omniacreator/qtcreator,maui-packages/qt-creator,duythanhphan/qt-creator,omniacreator/qtcreator,xianian/qt-creator,Distrotech/qtcreator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,danimo/qt-creator,malikcjm/qtcreator,richardmg/qtcreator,xianian/qt-creator,colede/qtcreator,amyvmiwei/qt-creator,duythanhphan/qt-creator,maui-packages/qt-creator,kuba1/qtcreator,farseerri/git_code,colede/qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,xianian/qt-creator,malikcjm/qtcreator,richardmg/qtcreator,danimo/qt-creator,duythanhphan/qt-creator,martyone/sailfish-qtcreator,darksylinc/qt-creator,AltarBeastiful/qt-creator,omniacreator/qtcreator,darksylinc/qt-creator,darksylinc/qt-creator,danimo/qt-creator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,malikcjm/qtcreator,xianian/qt-creator,maui-packages/qt-creator,danimo/qt-creator,farseerri/git_code,maui-packages/qt-creator,richardmg/qtcreator,amyvmiwei/qt-creator,farseerri/git_code,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,darksylinc/qt-creator,colede/qtcreator,xianian/qt-creator,kuba1/qtcreator,omniacreator/qtcreator,maui-packages/qt-creator,colede/qtcreator,martyone/sailfish-qtcreator,Distrotech/qtcreator,colede/qtcreator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,Distrotech/qtcreator,danimo/qt-creator,maui-packages/qt-creator,omniacreator/qtcreator,duythanhphan/qt-creator,danimo/qt-creator,farseerri/git_code,AltarBeastiful/qt-creator,malikcjm/qtcreator,kuba1/qtcreator,richardmg/qtcreator,farseerri/git_code,richardmg/qtcreator,malikcjm/qtcreator,darksylinc/qt-creator,danimo/qt-creator,kuba1/qtcreator,kuba1/qtcreator,Distrotech/qtcreator,kuba1/qtcreator,maui-packages/qt-creator,AltarBeastiful/qt-creator,kuba1/qtcreator,duythanhphan/qt-creator,kuba1/qtcreator,duythanhphan/qt-creator,farseerri/git_code,AltarBeastiful/qt-creator,malikcjm/qtcreator,colede/qtcreator,darksylinc/qt-creator,omniacreator/qtcreator,richardmg/qtcreator,richardmg/qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,darksylinc/qt-creator,xianian/qt-creator,danimo/qt-creator,farseerri/git_code,AltarBeastiful/qt-creator,martyone/sailfish-qtcreator,amyvmiwei/qt-creator,duythanhphan/qt-creator,Distrotech/qtcreator,xianian/qt-creator,xianian/qt-creator,amyvmiwei/qt-creator,farseerri/git_code,omniacreator/qtcreator