Update qbs submodule.

To HEAD of master branch.

Change-Id: I98f75b561d60cf63673446222762148c1ce4913d
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
qbs build: Make use of AutotestRunner.

And fix some autotest project file problems uncovered by this.

Change-Id: Id2f46aeab31ccfbcffe43bd23af8115c69f57849
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>