[MNG-5905] Maven build does not work with Maven 2.2.1

Added maven-enforcer rule to check the minimum Maven version
to be built with.

pom.xml

@@ -42,6 +42,7 @@
   <inceptionYear>2001</inceptionYear>
 
   <properties>
+    <maven.version>3.0.5</maven.version>
     <maven.compiler.source>1.7</maven.compiler.source>
     <maven.compiler.target>1.7</maven.compiler.target>
     <classWorldsVersion>2.5.2</classWorldsVersion>
@@ -142,8 +143,11 @@
     </contributor>
   </contributors>
 
+  <!-- This marked as deprecated for Maven 3.X. This is checked by maven-enforcer-plugin -->
+  <!--  http://jira.codehaus.org/browse/MNG-4840 -->
+  <!--  http://jira.codehaus.org/browse/MNG-5297 -->
   <prerequisites>
-    <maven>2.2.1</maven>
+    <maven>${maven.version}</maven>
   </prerequisites>
 
   <!--bootstrap-start-comment-->
@@ -559,6 +563,25 @@
           </excludes>
         </configuration>
       </plugin>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-enforcer-plugin</artifactId>
+        <executions>
+          <execution>
+            <id>enforce-maven</id>
+            <goals>
+              <goal>enforce</goal>
+            </goals>
+            <configuration>
+              <rules>
+                <requireMavenVersion>
+                  <version>${maven.version}</version>
+                </requireMavenVersion>
+              </rules>    
+            </configuration>
+          </execution>
+        </executions>
+      </plugin>
     </plugins>
   </build>