bmpx8x: rewrite in C; FTI; C++ wraps C

This driver has been rewritten from scratch.

See docs/apichanges.md for a list of API compatibility changes
compared to the original driver.

Signed-off-by: Jon Trulson <jtrulson@ics.com>

examples/java/BMPX8XSample.java

@@ -1,6 +1,7 @@
 /*
  * Author: Stefan Andritoiu <stefan.andritoiu@intel.com>
- * Copyright (c) 2015 Intel Corporation.
+ * Author: Jon Trulson <jtrulson@ics.com>
+ * Copyright (c) 2015-2017 Intel Corporation.
  *
  * Permission is hereby granted, free of charge, to any person obtaining
  * a copy of this software and associated documentation files (the
@@ -22,27 +23,33 @@
  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-//NOT TESTED!!!
 public class BMPX8XSample {
 
-	public static void main(String[] args) throws InterruptedException {
-		// ! [Interesting]
-		// Instantiate a BMPX8X sensor on I2C
-		upm_bmpx8x.BMPX8X sensor = new upm_bmpx8x.BMPX8X(0);
+    public static void main(String[] args) throws InterruptedException {
+// ! [Interesting]
 
-		// Print the pressure, altitude, sea level, and
-		// temperature values every second
-		while (true) {
-			System.out.println("Pressure: " + sensor.getPressure());
-			System.out.println("Altitude: " + sensor.getAltitude());
-			System.out.println("Sealevel pressure: "
-					+ sensor.getSealevelPressure());
-			System.out.println("Temperature: " + sensor.getTemperature());
-			System.out.println();
+        // Instantiate a BMPX8X sensor on I2C using defaults.
+        upm_bmpx8x.BMPX8X sensor = new upm_bmpx8x.BMPX8X();
 
-			Thread.sleep(1000);
-		}
-		// ! [Interesting]
-	}
+        // Print the pressure, altitude, sea level, and
+        // temperature values every .5 seconds
+        while (true)
+        {
+            sensor.update();
 
-}
+            System.out.println("Pressure: "
+                               + sensor.getPressure()
+                               + " Pa, Temperature: "
+                               + sensor.getTemperature()
+                               + " C, Altitude: "
+                               + sensor.getAltitude()
+                               + " m, Sea level: "
+                               + sensor.getSealevelPressure()
+                               + " Pa");
+
+            Thread.sleep(500);
+        }
+// ! [Interesting]
+    }
+
+}