lcdks: renamed from sainsmartks, added backlight support

The sainsmartks driver has been reimplemented in it's own, new C/C++
library: lcdks (LCD Keypad Shield).

In addition, support for an optional backlight GPIO was added.

This was tested with the SainsmartKS and DFRobot LCD Keypad Shields.

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

src/lcdks/javaupm_lcdks.i

@@ -0,0 +1,20 @@
+%module javaupm_lcdks
+%include "../upm.i"
+%include "../upm_vectortypes.i"
+%include "typemaps.i"
+
+%include "lcdks.hpp"
+%{
+    #include "lcdks.hpp"
+%}
+
+%pragma(java) jniclasscode=%{
+    static {
+        try {
+            System.loadLibrary("javaupm_lcdks");
+        } catch (UnsatisfiedLinkError e) {
+            System.err.println("Native code library failed to load. \n" + e);
+            System.exit(1);
+        }
+    }
+%}