Added stack traces and better error reporting in C++

When an error is reported or an assertion fails in C++, a line is now
printed with information about where the error occured, and a stack trace
is printed.

The stacktrace isn't implemented in the HAL because it's not
hardware-dependent, so StackTrace.hpp and StackTrace.cpp are gone.

The Eclipse project template is modified to include "-export-dynamic" in
the linker options, which is necessary for stack traces.

Change-Id: Ie86c14185b13ed603d0fe6467e87ba4f731b1913

hal/include/HAL/cpp/StackTrace.hpp

@@ -1,12 +0,0 @@
-#pragma once
-
-#ifdef __vxworks
-#include <vxWorks.h>
-#else
-#include <stdint.h>
-#endif
-
-extern "C"
-{
-	void printCurrentStackTrace();
-}