[not part of build] Make class uninstantiable except from native code.

plugin/oji/MRJCarbon/plugin/Source/JNIThread.java

@@ -44,10 +44,10 @@
 
 package netscape.oji;
 
-public class JNIThread extends Thread {
+class JNIThread extends Thread {
 	private int fSecureEnv;
-
-	public JNIThread(int secureEnv) {
+	
+	private JNIThread(int secureEnv) {
 		super("JNIThread->0x" + Integer.toHexString(secureEnv));
 		fSecureEnv = secureEnv;
 		setPriority(NORM_PRIORITY);