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/mpu9150/mpu60x0.hpp

@@ -932,6 +932,10 @@ namespace upm {
     float m_gyroScale;
 
   private:
+    /* Disable implicit copy and assignment operators */
+    MPU60X0(const MPU60X0&) = delete;
+    MPU60X0 &operator=(const MPU60X0&) = delete;
+
     mraa::I2c m_i2c;
     uint8_t m_addr;
 

src/mpu9150/mpu9150.hpp

@@ -126,6 +126,10 @@ namespace upm {
 
 
   private:
+      /* Disable implicit copy and assignment operators */
+      MPU9150(const MPU9150&) = delete;
+      MPU9150 &operator=(const MPU9150&) = delete;
+
     int m_i2cBus;
     uint8_t m_magAddress;
     bool m_enableAk8975;