JAVA: Unified Java Example names

Unified all Java examples to *match* <LIBRARY>[_otherstuf]_Example.java.
Note, a handful of the examples have a pseudo-random string for the
first component (see FlexSensor_Example.java, ideally this would be
Flex_Example.java).

This commit allows for quick development on a single sensor library
since a -DMODULE_LIST=mysensorlib now works with Java examples
(previously Java examples would fail generation when using
MODULE_LIST).

    * Renamed examples
    * Updated class names
    * Updated library descriptor .json files
    * Updated sample mapping file

TODO: Make this work like the C/C++ examples - grab the target library
name from the filename and grab all dependencies from that target
library.  Fix the handful of example names which don't conform.

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

examples/java/MPR121_Example.java

@@ -0,0 +1,34 @@
+public class MPR121_Example {
+
+	private static void printButtons(upm_mpr121.MPR121 touch) {
+		boolean buttonPresed = false;
+
+		System.out.print("Buttons pressed: ");
+		for (int i = 0; i < 12; i++) {
+			if ((touch.getM_buttonStates() & (1 << i)) != 0) {
+				System.out.print(i + " ");
+				buttonPresed = true;
+			}
+		}
+
+		if (!buttonPresed)
+			System.out.print("None ");
+
+		System.out.println();
+	}
+
+	public static void main(String[] args) throws InterruptedException {
+		// Instantiate an MPR121 on I2C bus 0
+		upm_mpr121.MPR121 touch = new upm_mpr121.MPR121(0);
+
+		// init according to AN3944 defaults
+		touch.configAN3944();
+
+		while (true) {
+			touch.readButtons();
+			printButtons(touch);
+			Thread.sleep(1000);
+		}
+	}
+
+}