Revert removing FLAG_ACTIVITY_CLEAR_TOP from intent
Removing that flag from the intent provokes some apps not being able to finish pressing the back key.
This change doesn't affect other opened apps.

Change-Id: I81a47f8e648114d8e2144a3b9854ede299d67871
Settings: External GPS Support (2/2)

- Ported feature from CM9

Submitted on behalf of a third-party: Cuong Bui

Change-Id: I324269dae1c621b38e2f624e0ce82bf600896ff6