EmulatorView library: tidy up public API

GrowableIntArray and TextStyle are part of the library's internals and
not exposed through any of the intended public APIs, so they should be
marked package-private.

Author: steven676

libraries/emulatorview/src/jackpal/androidterm/emulatorview/GrowableIntArray.java

@@ -1,12 +1,12 @@
 package jackpal.androidterm.emulatorview;
 
-public class GrowableIntArray {
-    public GrowableIntArray(int initalCapacity) {
+class GrowableIntArray {
+    GrowableIntArray(int initalCapacity) {
         mData = new int[initalCapacity];
         mLength = 0;
     }
 
-    public void append(int i) {
+    void append(int i) {
         if (mLength + 1 > mData.length) {
             int newLength = Math.max((mData.length * 3) >> 1, 16);
             int[] temp = new int[newLength];

libraries/emulatorview/src/jackpal/androidterm/emulatorview/TextStyle.java

@@ -1,6 +1,6 @@
 package jackpal.androidterm.emulatorview;
 
-public final class TextStyle {
+final class TextStyle {
     // Effect bitmasks:
     final static int fxNormal = 0;
     final static int fxBold = 1; // Originally Bright
@@ -36,4 +36,9 @@ static int decodeBackColor(int encodedColor) {
     static int decodeEffect(int encodedColor) {
         return (encodedColor >> 18) & 0x3f;
     }
+
+    private TextStyle() {
+        // Prevent instantiation
+        throw new UnsupportedOperationException();
+    }
 }