New QTC_CHECK warning replacing QTC_ASSERT(x, /**/)

Warn if the condition fails, but otherwise don't change the execution
flow.

Change-Id: Id7b14c745109b66960add967b2a4ef8d31e1a546
Reviewed-on: http://codereview.qt.nokia.com/2389
Reviewed-by: Eike Ziller <eike.ziller@nokia.com>

src/plugins/debugger/gdb/coregdbadapter.cpp

@@ -239,7 +239,7 @@ void CoreGdbAdapter::runEngine()
 void CoreGdbAdapter::interruptInferior()
 {
     // A core never runs, so this cannot be called.
-    QTC_ASSERT(false, /**/);
+    QTC_CHECK(false);
 }
 
 void CoreGdbAdapter::shutdownInferior()