Update plugins: Checkstyle to 2.9.1 from 2.8; PMD to 2.7.1 from 2.7.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1306456 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

pom.xml

@@ -285,7 +285,7 @@ limitations under the License.
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-checkstyle-plugin</artifactId>
-        <version>2.8</version>
+        <version>2.9.1</version>
         <configuration>
           <configLocation>${basedir}/checkstyle.xml</configLocation>
           <enableRulesSummary>false</enableRulesSummary>
@@ -295,7 +295,7 @@ limitations under the License.
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-pmd-plugin</artifactId>
-        <version>2.7</version>
+        <version>2.7.1</version>
         <configuration>
           <targetJdk>1.5</targetJdk>
         </configuration>