FileUtils: Set the initial size of the ByteArrayOutputStream buffer.

android/src/com/reecedunn/espeak/CheckVoiceData.java

@@ -76,7 +76,7 @@ public class CheckVoiceData extends Activity {
     public static boolean canUpgradeResources(Context context) {
         try {
             final String version = FileUtils.read(context.getResources().openRawResource(R.raw.espeakdata_version));
-            final String installedVersion = FileUtils.read(new FileInputStream(new File(getDataPath(context), "version")));
+            final String installedVersion = FileUtils.read(new File(getDataPath(context), "version"));
             return !version.equals(installedVersion);
         } catch (Exception e) {
             return false;

android/src/com/reecedunn/espeak/FileUtils.java

@@ -19,13 +19,22 @@ package com.reecedunn.espeak;
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
+import java.io.FileInputStream;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 
 public class FileUtils {
+    public static String read(File file) throws IOException {
+        return read(new FileInputStream(file), (int)file.length());
+    }
+
     public static String read(InputStream stream) throws IOException {
-        ByteArrayOutputStream content = new ByteArrayOutputStream();
+        return read(stream, stream.available());
+    }
+
+    public static String read(InputStream stream, int length) throws IOException {
+        ByteArrayOutputStream content = new ByteArrayOutputStream(length);
         int c = stream.read();
         while (c != -1)
         {