MECLIPSE-641 org.eclipse.jdt.core.prefs doesn't get updated with source and target version

Author: stefanseifert

src/main/java/org/apache/maven/plugin/eclipse/EclipsePlugin.java

@@ -1175,6 +1175,11 @@ protected void checkDeprecationsExtras()
     public final void writeConfiguration( IdeDependency[] deps )
         throws MojoExecutionException
     {
+
+        // write additional configuration files first to allow merging with eclipse 
+        // settings generated by other steps (MECLIPSE-641)
+        writeAdditionalConfig();
+        
         EclipseWriterConfig config = createEclipseWriterConfig( deps );
 
         if ( wtpmanifest && isJavaProject() )
@@ -1227,8 +1232,6 @@ public final void writeConfiguration( IdeDependency[] deps )
         // So the .project file must be written AFTER those have run!
         new EclipseProjectWriter().init( getLog(), config ).write();
 
-        writeAdditionalConfig();
-
         getLog().info( Messages.getString( "EclipsePlugin.wrote", new Object[] {
                                            config.getEclipseProjectName(), eclipseProjectDir.getAbsolutePath() } ) );
     }