make sure Xlib is in our dependencies

Task-number: QTCREATORBUG-11107
Change-Id: I5d0bc2cb34a1c02e2c310df4bd40fa9df198292d
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Debugger: Use more direct breakpoint setting in dumper auto test

Change-Id: Ibb24ded55ba02b908b63d71f1f872c73ee7b011b
Reviewed-by: Christian Stenger <christian.stenger@digia.com>