diff --git a/includes/locale.inc b/includes/locale.inc
index 4c52b9cc93269a823330fd9b0ec05eff16bfefb0..48351c12ffed0e6c2dfad0c389d19c971ffc1179 100644
--- a/includes/locale.inc
+++ b/includes/locale.inc
@@ -678,27 +678,33 @@ function _locale_import_one_string($op, $value = NULL, $mode = NULL, $lang = NUL
     case 'db-store':
       // We got header information.
       if ($value['msgid'] == '') {
-        $header = _locale_import_parse_header($value['msgstr']);
-
-        // Get the plural formula and update in database.
-        if (isset($header["Plural-Forms"]) && $p = _locale_import_parse_plural_forms($header["Plural-Forms"], $file->uri)) {
-          list($nplurals, $plural) = $p;
-          db_update('languages')
-            ->fields(array(
-              'plurals' => $nplurals,
-              'formula' => $plural,
-            ))
-            ->condition('language', $lang)
-            ->execute();
-        }
-        else {
-          db_update('languages')
-            ->fields(array(
-              'plurals' => 0,
-              'formula' => '',
-            ))
-            ->condition('language', $lang)
-            ->execute();
+        $languages = language_list();
+        if (($mode != LOCALE_IMPORT_KEEP) || empty($languages[$lang]->plurals)) {
+          // Since we only need to parse the header if we ought to update the
+          // plural formula, only run this if we don't need to keep existing 
+          // data untouched or if we don't have an existing plural formula.
+          $header = _locale_import_parse_header($value['msgstr']);
+
+          // Get the plural formula and update in database.
+          if (isset($header["Plural-Forms"]) && $p = _locale_import_parse_plural_forms($header["Plural-Forms"], $file->uri)) {
+            list($nplurals, $plural) = $p;
+            db_update('languages')
+              ->fields(array(
+                'plurals' => $nplurals,
+                'formula' => $plural,
+              ))
+              ->condition('language', $lang)
+              ->execute();
+          }
+          else {
+            db_update('languages')
+              ->fields(array(
+                'plurals' => 0,
+                'formula' => '',
+              ))
+              ->condition('language', $lang)
+              ->execute();
+          }
         }
         $header_done = TRUE;
       }
diff --git a/modules/locale/locale.admin.inc b/modules/locale/locale.admin.inc
index f938838661cacb20e551b2f45af74cca5aa94702..1422790f49631ee3b0f5078150c8be41f8dac155 100644
--- a/modules/locale/locale.admin.inc
+++ b/modules/locale/locale.admin.inc
@@ -962,8 +962,8 @@ function locale_translate_import_form($form) {
     '#title' => t('Mode'),
     '#default_value' => LOCALE_IMPORT_KEEP,
     '#options' => array(
-      LOCALE_IMPORT_OVERWRITE => t('Strings in the uploaded file replace existing ones, new ones are added'),
-      LOCALE_IMPORT_KEEP => t('Existing strings are kept, only new strings are added')
+      LOCALE_IMPORT_OVERWRITE => t('Strings in the uploaded file replace existing ones, new ones are added. The plural format is updated.'),
+      LOCALE_IMPORT_KEEP => t('Existing strings and the plural format are kept, only new strings are added.')
     ),
   );
   $form['import']['submit'] = array('#type' => 'submit', '#value' => t('Import'));
diff --git a/modules/locale/locale.test b/modules/locale/locale.test
index d9c638671691165c3e9b1359ad109951f1369c9a..346dcc918d38c7959b870cf753c4579e5de434d8 100644
--- a/modules/locale/locale.test
+++ b/modules/locale/locale.test
@@ -613,6 +613,9 @@ class LocaleImportFunctionalTest extends DrupalWebTestCase {
     // The import should have created 7 strings.
     $this->assertRaw(t('The translation was successfully imported. There are %number newly created translated strings, %update strings were updated and %delete strings were removed.', array('%number' => 7, '%update' => 0, '%delete' => 0)), t('The translation file was successfully imported.'));
 
+    // This import should have saved plural forms to have 2 variants.
+    $this->assert(db_query("SELECT plurals FROM {languages} WHERE language = 'fr'")->fetchField() == 2, t('Plural number initialized.'));
+
     // Ensure we were redirected correctly.
     $this->assertEqual($this->getUrl(), url('admin/config/regional/translate', array('absolute' => TRUE)), t('Correct page redirection.'));
 
@@ -668,6 +671,8 @@ class LocaleImportFunctionalTest extends DrupalWebTestCase {
     $this->drupalPost('admin/config/regional/translate/translate', $search, t('Filter'));
     $this->assertText(t('No strings available.'), t('String not overwritten by imported string.'));
 
+    // This import should not have changed number of plural forms.
+    $this->assert(db_query("SELECT plurals FROM {languages} WHERE language = 'fr'")->fetchField() == 2, t('Plural numbers untouched.'));
 
     // Try importing a .po file with overriding strings, and ensure existing
     // strings are overwritten.
@@ -687,6 +692,8 @@ class LocaleImportFunctionalTest extends DrupalWebTestCase {
     );
     $this->drupalPost('admin/config/regional/translate/translate', $search, t('Filter'));
     $this->assertNoText(t('No strings available.'), t('String overwritten by imported string.'));
+    // This import should have changed number of plural forms.
+    $this->assert(db_query("SELECT plurals FROM {languages} WHERE language = 'fr'")->fetchField() == 3, t('Plural numbers changed.'));
   }
 
   /**
@@ -831,7 +838,7 @@ msgstr ""
 "MIME-Version: 1.0\\n"
 "Content-Type: text/plain; charset=UTF-8\\n"
 "Content-Transfer-Encoding: 8bit\\n"
-"Plural-Forms: nplurals=2; plural=(n > 1);\\n"
+"Plural-Forms: nplurals=3; plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;\\n"
 
 msgid "Monday"
 msgstr "Montag"
diff --git a/modules/rdf/rdf.module b/modules/rdf/rdf.module
index 48e31c08386b3b1ecd1108e12f0be5e27a7cf099..97d3c33bf67280b7ae228d9860e06b33f175103d 100644
--- a/modules/rdf/rdf.module
+++ b/modules/rdf/rdf.module
@@ -668,6 +668,24 @@ function rdf_preprocess_comment(&$variables) {
   }
 }
 
+/**
+ * Implements MODULE_preprocess_HOOK().
+ */
+function rdf_preprocess_taxonomy_term(&$variables) {
+  // Adds the RDF type of the term and the term name in a meta tag.
+  $term = $variables['term'];
+  $term_label_meta = array(
+      '#tag' => 'meta',
+      '#attributes' => array(
+        'about' => url('taxonomy/term/' . $term->tid),
+        'typeof' => $term->rdf_mapping['rdftype'],
+        'property' => $term->rdf_mapping['name']['predicates'],
+        'content' => $term->name,
+      ),
+    );
+  drupal_add_html_head($term_label_meta, 'rdf_term_label');
+}
+
 /**
  * Implements hook_field_attach_view_alter().
  */
diff --git a/modules/rdf/rdf.test b/modules/rdf/rdf.test
index 5c487403aae59ee1fbcced1bbcffa20489e2a47a..85dac897083abf1022e147a1b243c05b0a9e5a59 100644
--- a/modules/rdf/rdf.test
+++ b/modules/rdf/rdf.test
@@ -332,6 +332,21 @@ class RdfMappingDefinitionTestCase extends DrupalWebTestCase {
     $author_about = $this->xpath("//a[@typeof='sioc:User' and @about='$account_uri' and @property='foaf:name' and contains(@xml:lang, '')]");
     $this->assertTrue(!empty($author_about), t('RDFa markup found on author information on post. xml:lang on username is set to empty string.'));
   }
+
+  /**
+   * Creates a random term and ensures the right RDFa markup is used.
+   */
+  function testTaxonomyTermRdfaAttributes() {
+    $vocabulary = TaxonomyWebTestCase::createVocabulary();
+    $term = TaxonomyWebTestCase::createTerm($vocabulary);
+
+    // Views the term and checks that the RDFa markup is correct.
+    $this->drupalGet('taxonomy/term/' . $term->tid);
+    $term_url = url('taxonomy/term/' . $term->tid);
+    $term_name = $term->name;
+    $term_rdfa_meta = $this->xpath("//meta[@typeof='skos:Concept' and @about='$term_url' and contains(@property, 'rdfs:label') and contains(@property, 'skos:prefLabel') and @content='$term_name']");
+    $this->assertTrue(!empty($term_rdfa_meta), t('RDFa markup found on term page.'));
+  }
 }