memory: Hide all copy/assignment ops for class w/heap allocation

Many of the UPM libraries allocate space on the heap but do not
explicitly handle copying and assignment.  This commit uses C++11 delete
to forbit both the copy and assignment operator for these classes.

The C++ examples which used assignment operators to initialize class
instances were also updated since it did not appear necessary in those
cases to use the assignment operator.

Signed-off-by: Noel Eck <noel.eck@intel.com>

src/hka5/hka5.hpp

@@ -131,5 +131,8 @@ namespace upm {
     hka5_context m_hka5;
 
   private:
+    /* Disable implicit copy and assignment operators */
+    HKA5(const HKA5&) = delete;
+    HKA5 &operator=(const HKA5&) = delete;
   };
 }