Android compile fixes for Qt 4.

Change-Id: I4620a0b8ff29dbb8a0d93f2fc90cc7984f49ed92
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Debugger: Use backend-agnostic readRawMemory

Change-Id: Iacc95753b85f87b7ece903d9c5b89570714d0d17
Reviewed-by: hjk <hjk121@nokiamail.com>