Fixed issue 93 by preventing the display of a large commit diff.

Still needs to implement the equivalent for subversion and mercurial,
maybe with a simple command $scm->isCommitLarge($commit).

src/IDF/Scm/Mercurial.php

@@ -302,6 +302,19 @@ class IDF_Scm_Mercurial
         return $out[0];
     }
 
+    /**
+     * Get commit size.
+     *
+     * Get the sum of all the added/removed lines and the number of
+     * affected files.
+     *
+     * @param string Commit ('HEAD')
+     * @return array array(added, removed, affected)
+     */
+    public function getCommitSize($commit='HEAD')
+    {
+        return array(0, 0, 0);
+    }
 
     /**
      * Get latest changes.