VersionUpgrader: Remove Project * from upgrade method
VersionUpgrader: Remove Project * from upgrade method

The VersionUpgrader is supposed to be generic and not bound to .user
files. Move ahead with the merge of the settings refactoring.

Change-Id: Ie781a1b23dd60d4b15f7fe260f3dad315a8fa503
Reviewed-by: Tobias Hunger <012f8d714267bccc9d4766fbeace9f175fcc70c4@digia.com>

amyvmiwei/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,colede/qtcreator,xianian/qt-creator,maui-packages/qt-creator,xianian/qt-creator,kuba1/qtcreator,maui-packages/qt-creator,xianian/qt-creator,colede/qtcreator,martyone/sailfish-qtcreator,kuba1/qtcreator,xianian/qt-creator,kuba1/qtcreator,maui-packages/qt-creator,Distrotech/qtcreator,farseerri/git_code,Distrotech/qtcreator,danimo/qt-creator,maui-packages/qt-creator,martyone/sailfish-qtcreator,colede/qtcreator,farseerri/git_code,martyone/sailfish-qtcreator,colede/qtcreator,Distrotech/qtcreator,danimo/qt-creator,farseerri/git_code,kuba1/qtcreator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,AltarBeastiful/qt-creator,maui-packages/qt-creator,Distrotech/qtcreator,amyvmiwei/qt-creator,amyvmiwei/qt-creator,danimo/qt-creator,colede/qtcreator,maui-packages/qt-creator,farseerri/git_code,Distrotech/qtcreator,Distrotech/qtcreator,xianian/qt-creator,kuba1/qtcreator,amyvmiwei/qt-creator,farseerri/git_code,danimo/qt-creator,xianian/qt-creator,farseerri/git_code,AltarBeastiful/qt-creator,kuba1/qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,danimo/qt-creator,martyone/sailfish-qtcreator,colede/qtcreator,kuba1/qtcreator,Distrotech/qtcreator,amyvmiwei/qt-creator,martyone/sailfish-qtcreator,AltarBeastiful/qt-creator,kuba1/qtcreator,kuba1/qtcreator,martyone/sailfish-qtcreator,danimo/qt-creator,AltarBeastiful/qt-creator,danimo/qt-creator,AltarBeastiful/qt-creator,xianian/qt-creator,martyone/sailfish-qtcreator,danimo/qt-creator,amyvmiwei/qt-creator,farseerri/git_code,xianian/qt-creator,farseerri/git_code,AltarBeastiful/qt-creator,maui-packages/qt-creator,amyvmiwei/qt-creator,AltarBeastiful/qt-creator,colede/qtcreator