MPECLIPSE-56 Only create .classpath and javabuilder if sources are present

git-svn-id: https://svn.apache.org/repos/asf/maven/maven-1/plugins/trunk@116241 13f79535-47bb-0310-9956-ffa450edef68

eclipse/src/plugin-resources/templates/project.jelly

@@ -36,6 +36,7 @@
       </j:if>
     </j:forEach>
   </projects>
+  <j:if test="${sourcesPresent}">
   <buildSpec>
     <buildCommand>
       <name>org.eclipse.jdt.core.javabuilder</name>
@@ -57,6 +58,7 @@
     <nature>${nature}</nature>
     </j:forEach>
   </natures>
+  </j:if>
 </projectDescription>
 
 </j:whitespace>