Revert "disabled RAT plugin by default and updated the docs for releasing explaining how to enable it."

This reverts commit d30ffb79c8.

Reverted because the PR build was missing files without the right license.

RELEASING.md

@@ -12,7 +12,7 @@ Things to do before issuing a new release:
 
 * Bump the version numbers in example and test poms to the next release version. e.g. 2.0.0
 
-* Build the release locally: mvn clean install -DskipLicenseCheck=false -Prelease
+* Build the release locally: mvn clean install -Prelease
 
 * Test the standalone release (this should be done on windows as well as linux):
 1. Unpack the distribution zip or tar.gz

pom.xml

@@ -100,7 +100,7 @@
          -Djava.net.preferIPv4Stack=true
       </activemq-surefire-argline>
       <activemq.basedir>${project.basedir}</activemq.basedir>
-      <skipLicenseCheck>true</skipLicenseCheck>
+      <skipLicenseCheck>false</skipLicenseCheck>
       <skipStyleCheck>false</skipStyleCheck>
       <geronimo.jms.2.spec.version>1.0-alpha-1</geronimo.jms.2.spec.version>
    </properties>
@@ -899,12 +899,48 @@
                <failOnError>false</failOnError>
             </configuration>
          </plugin>
+         <plugin>
+            <groupId>com.mycila</groupId>
+            <artifactId>license-maven-plugin</artifactId>
+            <version>2.6</version>
+            <configuration>
+               <skip>${skipLicenseCheck}</skip>
+               <basedir>${activemq.basedir}</basedir>
+               <header>etc/license-header.txt</header>
+               <quiet>false</quiet>
+               <failIfMissing>true</failIfMissing>
+               <includes>
+                  <include>**/*.java</include>
+               </includes>
+               <excludes>
+                  <exclude>**/filter/impl/Identifier.java</exclude>
+                  <exclude>**/filter/impl/Operator.java</exclude>
+                  <exclude>**/filter/impl/RegExp.java</exclude>
+                  <exclude>**/utils/UUID*.java</exclude>
+                  <exclude>**/org/apache/activemq/selector/**</exclude>
+                  <exclude>**/org/apache/activemq/utils/json/**</exclude>
+                  <exclude>**/org/apache/activemq/utils/Base64.java</exclude>
+               </excludes>
+               <useDefaultExcludes>true</useDefaultExcludes>
+               <strictCheck>true</strictCheck>
+               <mapping>
+                  <java>JAVADOC_STYLE</java>
+               </mapping>
+            </configuration>
+            <executions>
+               <execution>
+                  <phase>compile</phase>
+                  <goals>
+                     <goal>check</goal>
+                  </goals>
+               </execution>
+            </executions>
+         </plugin>
          <plugin>
             <groupId>org.apache.rat</groupId>
             <artifactId>apache-rat-plugin</artifactId>
             <version>0.11</version>
             <configuration>
-               <skip>${skipLicenseCheck}</skip>
                <excludes>
                   <exclude>**/*.bin</exclude>
                   <exclude>**/*.log</exclude>