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/mcp2515/mcp2515.hpp

@@ -515,6 +515,10 @@ namespace upm {
         void bitModify(uint8_t addr, uint8_t mask, uint8_t value);
 
     private:
+        /* Disable implicit copy and assignment operators */
+        MCP2515(const MCP2515&) = delete;
+        MCP2515 &operator=(const MCP2515&) = delete;
+
 #if defined(SWIGJAVA) || defined(JAVACALLBACK)
         void installISR(int pin, void (*isr)(void *), void *arg);
 #endif