Add support for cdata library for Java

Examples/test-suite/java/li_cdata_runme.java

@@ -0,0 +1,24 @@
+import li_cdata.*;
+
+public class li_cdata_runme {
+
+  static {
+    try {
+        System.loadLibrary("li_cdata");
+    } catch (UnsatisfiedLinkError e) {
+      System.err.println("Native code library failed to load. See the chapter on Dynamic Linking Problems in the SWIG Java documentation for help.\n" + e);
+      System.exit(1);
+    }
+  }
+
+  public static void main(String argv[]) throws Throwable
+  {
+    byte[] s = "ABC abc".getBytes();
+    SWIGTYPE_p_void m = li_cdata.malloc(256);
+    li_cdata.memmove(m, s);
+    byte[] ss = li_cdata.cdata(m, 7);
+    String ss_string = new String(ss);
+    if (!ss_string.equals("ABC abc"))
+      throw new RuntimeException("failed got: " + ss_string);
+  }
+}