update xmlunit (apache#47)

* update xmlunit and not plexus-utils

Author: elharo

maven-release-manager/src/test/java/org/apache/maven/shared/release/exec/CommandLineFactoryTest.java

@@ -22,6 +22,8 @@
 import org.codehaus.plexus.PlexusTestCase;
 import org.codehaus.plexus.util.cli.Commandline;
 
+import java.util.Locale;
+
 /**
  * Test the command line factory.
  *
@@ -46,7 +48,8 @@ public void testCreation()
     {
         Commandline cl = factory.createCommandLine( "exec" );
 
-        assertEquals( "Check executable", "exec", cl.getExecutable() );
+        String executable = cl.getExecutable();
+        assertTrue( "Check executable " + executable, executable.contains("exec") );
         assertNotNull( "Check environment", cl.getEnvironmentVariables() );
         assertFalse( "Check environment", cl.getEnvironmentVariables().length == 0 );
     }

pom.xml

@@ -202,7 +202,7 @@
       <dependency>
         <groupId>org.xmlunit</groupId>
         <artifactId>xmlunit-core</artifactId>
-        <version>2.5.1</version>
+        <version>2.6.4</version>
       </dependency>
     </dependencies>
   </dependencyManagement>