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/mma7361/mma7361.hpp

@@ -202,6 +202,9 @@ namespace upm {
     mma7361_context m_mma7361;
 
   private:
+    /* Disable implicit copy and assignment operators */
+    MMA7361(const MMA7361&) = delete;
+    MMA7361 &operator=(const MMA7361&) = delete;
   };
 }