Debugger: Fix QThread autotest with LLDB

Change-Id: I90e93a15b8280a55c31db6be28fe6eb39c7babb0
Reviewed-by: hjk <hjk121@nokiamail.com>
Debugger: Restrict the QDir version hack to 5.2.x

Change-Id: Ic5560524b2c317c6062d5eebc9b8b7e79b7e504e
Reviewed-by: hjk <hjk121@nokiamail.com>