examples: Remove heap allocation from C++ examples

Cleanup of UPM C++ examples.  Switched from heap allocation to
stack allocation when possible.  This simplifies the samples since it
removes the need for explicit memory management.  A script was used to
identify and replace pointer use.  To simplify the replace script, I
re-formatted the C++ examples using the UPM .clang-format file.
Unfortuantely this changes the look of the UPM C++ examples to a large
degree.  However, examples will now have a standard look/feel and
uniform formatting.

    * Ran clang-format w/provided UPM .clang-format file
    * Removed new's/delete's whenever possible (left those in interface
      examples)
    * Added IIO sensor library implementation of callback void* arg
    * Converted all sleeps to upm defined delays (added header when
      necessary)
    * Scrubbed CXX example includes

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

examples/c++/tcs3414cs.cxx

@@ -22,13 +22,14 @@
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-#include <unistd.h>
 #include <iostream>
-#include "tcs3414cs.hpp"
 #include <signal.h>
+#include <stdio.h>
+
+#include "tcs3414cs.hpp"
+#include "upm_utilities.h"
 
 int doWork = 0;
-upm::TCS3414CS *sensor = NULL;
 
 void
 sig_handler(int signo)
@@ -41,25 +42,24 @@ sig_handler(int signo)
 }
 
 int
-main(int argc, char **argv)
+main(int argc, char** argv)
 {
     //! [Interesting]
     upm::tcs3414sc_rgb_t rgb;
 
     // Instantiate the color sensor on I2C
-    sensor = new upm::TCS3414CS ();
+    upm::TCS3414CS sensor;
 
     // Print out the r, g, b, and clr value every 0.5 seconds
     while (!doWork) {
-        sensor->readRGB (&rgb);
-        std::cout << (int)rgb.r << ", " << (int)rgb.g << ", " << (int)rgb.b << ", " << rgb.clr << std::endl;
-        usleep (500000);
+        sensor.readRGB(&rgb);
+        std::cout << (int) rgb.r << ", " << (int) rgb.g << ", " << (int) rgb.b << ", " << rgb.clr
+                  << std::endl;
+        upm_delay_us(500000);
     }
     //! [Interesting]
 
     std::cout << "exiting application" << std::endl;
 
-    delete sensor;
-
     return 0;
 }