Debugger: Also show unmodified output for failing dumper tests

Change-Id: I1e06db52d0d7bea3ab626ad21b970d0fdfe28648
Reviewed-by: Christian Stenger <christian.stenger@digia.com>
Debugger: Speed up Qt namespace detection in non-Qt projects

Task-number: QTCREATORBUG-10610
Change-Id: Idc5a93625fa4a148864709a1cefbcbbab877a8a2
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: Christian Stenger <christian.stenger@digia.com>