CMakeProjectManager: Ensure that toolchain paths are last
CMakeProjectManager: Ensure that toolchain paths are last

Task-number: QTCREATORBUG-3959
Change-Id: I93a19af8309933a51d26f94980088c0f244cc84f
Reviewed-by: Nikolai Kosjar <9571db158ca61a0d070db010803474231fa0cbab@digia.com>

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