Issue 4260 - Replace Apache Commons Lang classes

src/org/adblockplus/brazil/RequestHandler.java

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 19 matching lines @@
 import java.nio.charset.Charset;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicLong;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 import java.util.zip.GZIPInputStream;
 import java.util.zip.InflaterInputStream;
 
 import org.adblockplus.ChunkedOutputStream;
 import org.adblockplus.android.AdblockPlus;
-import org.apache.commons.lang.StringUtils;
+import org.adblockplus.android.StringUtils;
 import org.literateprograms.BoyerMoore;
 
 import sunlabs.brazil.server.Request;
 import sunlabs.brazil.server.Server;
 import sunlabs.brazil.util.MatchString;
 import sunlabs.brazil.util.http.HttpInputStream;
 import sunlabs.brazil.util.http.HttpRequest;
 import android.util.Log;
 
 /**
@@ skipping 352 matching lines @@
       request.sendError(500, msg);
       Log.e(prefix, msg, e);
     }
     finally
     {
       target.close();
     }
     return true;
   }
 }