Forced java compiler to use 1.4 source/target level

git-svn-id: file:///opt/svn/repositories/sonatype.org/spice/trunk/plexus-build-api@883 5751e0cb-dcb7-432f-92e2-260806df54be

Author: Igor Fedorenko

pom.xml

@@ -31,6 +31,14 @@
           </execution>
         </executions>
       </plugin>
+      <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <configuration>
+              <source>1.4</source>
+              <target>1.4</target>
+          </configuration>
+      </plugin>
     </plugins>
   </build>
-</project>
+</project>