Protect init.php. Whitespace change. Log an environment level error if

we're not installed, later this will be replaced by a redirect to the
installer.

htdocs/init.php

@@ -19,11 +19,13 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+defined('INTERNAL') || die();
+
 // @todo <nigel> Set up error handling. For now, use trigger_error. I will
 // update all calls as necessary once error handling is finalised.
 
 $CFG = new StdClass;
-$CFG->docroot = dirname(__FILE__).'/';
+$CFG->docroot = dirname(__FILE__) . '/';
 
 // Figure out our include path
 if (!empty($_SERVER['MAHARA_LIBDIR'])) {
@@ -38,7 +40,10 @@ set_include_path('.' . PATH_SEPARATOR . $CFG->libroot);
 require 'errors.php';
 
 if (!is_readable($CFG->docroot . 'config.php')) {
-    trigger_error('Not installed! Please create config.php from config-dist.php');
+    // @todo Later, this will redirect to the installer script. For now, we
+    // just log and exit.
+    log_environ('Not installed! Please create config.php from config-dist.php');
+    exit;
 }
 
 require('config.php');