JNI sample modules and sample code

To illustrate the two JNI access methods and also how to use the CCA JNI to call CCA verbs, sample modules are provided.

mac.java

illustrates JNI calls versus C calls to CCA.

This sample program calls the same CCA verbs as the sample C language program named mac.c.

This sample program uses the package infrastructure of the new JNI access method.

For more information about this sample program, see Sample program in Java.

RNGpk.java

illustrates the method available for calling the JNI.

Java™ class implementations (*.java files) that call CCA JNI functions need an import line, such as this:
```
import com.ibm.crypto.cca.jni.*;
```
The Java classpath must point to CNM.jar.

The default location of the sample code is /opt/IBM/CCA/samples for both, SUSE and Red Hat distributions.