Qbs: Do not export symbols

Change-Id: I0e2332156ba481562ac3c2bc9fb1930f1368b2c9
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Qbs: Fix QbsRunConfiguration setup

Task-number: QBS-349
Task-number: QBS-355
Change-Id: Ibfa88e2d5ec59984c54ae9f69659f231a962a64c
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
qbs  updates.

- Make project files buildable with current qbs.
- Update qbs submodule to enable Qt Creator to open these project files.
- Fix an invalid access that caused a soft assert.

Change-Id: I976d19240112d1ff048e51036e6702383735352b
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>