Change Clirr config to compare to 2.0

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/net/branches/NET_2_0@923734 13f79535-47bb-0310-9956-ffa450edef68

Author: Niall Pemberton

pom.xml

@@ -267,7 +267,7 @@ limitations under the License.
 				<artifactId>clirr-maven-plugin</artifactId>
 				<version>2.2.2</version>
 				<configuration>
-					<comparisonVersion>1.4.1</comparisonVersion>
+					<comparisonVersion>2.0</comparisonVersion>
 					<minSeverity>info</minSeverity>
 				</configuration>
 			</plugin>