SystemInformation : Better stack trace

Add supprt for C++ name demangling during call stack
introspection. This will be enabled at compile time
if the required system libraries,header files, and
compiler features are detected. Add a method so that
the stack trace may be obtained on demand not just
from within the stack trace signal handler.

Change-Id: Ie829f4b24ab331e39b97f54e63564df70f129b7e