Fix rebase-related issues and update autopored files

Incorporated changes from rebased branch to recent develop changes (move utils to commons):
* PdfTokenizer
* GhostscriptHelper
* ImageMagickHelperTest
* TokeniserTest
Incorporated recent changes from develop (logging update):
* FlushPdfDocumentEvent
* DefaultTypographyApplier
* TestConfigurationEvent

DEVSIX-5706

Author: yulian-gaponenko

itext.tests/itext.io.tests/itext/io/font/otf/GposLookupType8Test.cs

@@ -22,8 +22,8 @@ You should have received a copy of the GNU Affero General Public License
 */
 using System;
 using System.Collections.Generic;
+using iText.Commons.Utils;
 using iText.IO.Font;
-using iText.IO.Util;
 using iText.Test;
 
 namespace iText.IO.Font.Otf {

itext.tests/itext.io.tests/itext/io/font/otf/GsubLookupType6Test.cs

@@ -22,8 +22,8 @@ You should have received a copy of the GNU Affero General Public License
 */
 using System;
 using System.Collections.Generic;
+using iText.Commons.Utils;
 using iText.IO.Font;
-using iText.IO.Util;
 using iText.Test;
 
 namespace iText.IO.Font.Otf {

itext.tests/itext.io.tests/itext/io/util/DateTimeUtilTest.cs

@@ -41,6 +41,7 @@ source product.
 address: [email protected]
 */
 using System;
+using iText.Commons.Utils;
 using iText.Test;
 
 namespace iText.IO.Util {

itext.tests/itext.io.tests/itext/io/util/ImageMagickHelperTest.cs

@@ -290,7 +290,7 @@ public virtual void CompareEqualsImagesAndCheckFuzzinessTest() {
                     NUnit.Framework.Assert.IsTrue(result);
                     NUnit.Framework.Assert.IsTrue(FileUtil.FileExists(diff));
                     System.Console.Out.Flush();
-                    String output = iText.IO.Util.JavaUtil.GetStringForBytes(baos.ToArray()).Trim();
+                    String output = iText.Commons.Utils.JavaUtil.GetStringForBytes(baos.ToArray()).Trim();
                     // This check is implemented in such a peculiar way because of .NET autoporting
                     NUnit.Framework.Assert.AreEqual('0', output[output.Length - 1]);
                     if (output.Length > 1) {

itext.tests/itext.kernel.tests/itext/kernel/actions/ecosystem/TestConfigurationEvent.cs

@@ -21,17 +21,18 @@ You should have received a copy of the GNU Affero General Public License
 along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 using System;
-using Common.Logging;
+using Microsoft.Extensions.Logging;
 using iText.Commons.Actions;
+using iText.IO;
 
 namespace iText.Kernel.Actions.Ecosystem {
     public class TestConfigurationEvent : AbstractITextConfigurationEvent {
         public const String MESSAGE = "Test configuration event was processed";
 
-        private static readonly ILog LOGGER = LogManager.GetLogger(typeof(TestConfigurationEvent));
+        private static readonly ILogger LOGGER = ITextLogManager.GetLogger(typeof(TestConfigurationEvent));
 
         protected override void DoAction() {
-            LOGGER.Warn(MESSAGE);
+            LOGGER.LogWarning(MESSAGE);
         }
     }
 }

itext.tests/itext.layout.tests/itext/layout/ListAlignmentDirectionTest.cs

@@ -24,6 +24,7 @@ You should have received a copy of the GNU Affero General Public License
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using iText.Commons.Utils;
 using iText.IO.Util;
 using iText.Kernel.Colors;
 using iText.Kernel.Pdf;

itext.tests/itext.sign.tests/itext/signatures/CertificateInfoTest.cs

@@ -22,7 +22,7 @@ You should have received a copy of the GNU Affero General Public License
 */
 using System;
 using System.Collections.Generic;
-using iText.IO.Util;
+using iText.Commons.Utils;
 using iText.Kernel;
 using iText.Test;
 

itext.tests/itext.sign.tests/itext/signatures/OcspClientBouncyCastleTest.cs

@@ -45,7 +45,7 @@ source product.
 using Org.BouncyCastle.Crypto;
 using Org.BouncyCastle.Ocsp;
 using Org.BouncyCastle.X509;
-using iText.IO.Util;
+using iText.Commons.Utils;
 using iText.Signatures.Testutils;
 using iText.Signatures.Testutils.Builder;
 using iText.Test;

itext.tests/itext.sign.tests/itext/signatures/PdfPKCS7Test.cs

@@ -24,7 +24,7 @@ You should have received a copy of the GNU Affero General Public License
 using Org.BouncyCastle.Crypto;
 using Org.BouncyCastle.Tsp;
 using Org.BouncyCastle.X509;
-using iText.IO.Util;
+using iText.Commons.Utils;
 using iText.Kernel;
 using iText.Kernel.Pdf;
 using iText.Signatures.Exceptions;

itext.tests/itext.sign.tests/itext/signatures/PdfSignatureAppearanceUnitTest.cs

@@ -23,8 +23,8 @@ You should have received a copy of the GNU Affero General Public License
 using System;
 using System.IO;
 using Org.BouncyCastle.X509;
+using iText.Commons.Utils;
 using iText.IO.Image;
-using iText.IO.Util;
 using iText.Kernel.Colors;
 using iText.Kernel.Font;
 using iText.Kernel.Geom;