Fix installer crashing b/c function was not available.

include/db/db.inc.php

@@ -6,6 +6,7 @@
 // FIXME: THIS IS A SHIM FOR BACKWARDS COMPATIBILITY - REMOVE WHEN NO LONGER NEEDED
 
 use Serendipity\Database\DbFactory;
+use Serendipity\Database\DbTools;
 
 // SQLite3 only fetches by assoc, we will emulate the other result types
 define(SQLITE3_ASSOC, 0);
@@ -42,9 +43,7 @@ function serendipity_db_insert($table, $values, $action = 'execute')
 
 function serendipity_db_bool($val)
 {
-    global $serendipity;
+    return DbTools::bool($val);
-    $db = DbFactory::createFromConfig($serendipity);
-    return $db->bool($val);
 }
 
 function serendipity_db_get_interval($val, $ival = 900)

lib/Serendipity/Database/DbAbstract.php

@@ -229,28 +229,6 @@ abstract class DbAbstract
         }
     }
 
-    /**
-     * Check whether an input value corresponds to a TRUE/FALSE option in the SQL database.
-     *
-     * Because older DBs could not store TRUE/FALSE values to be restored into a PHP variable,
-     * this function tries to detect what the return code of a SQL column is, and convert it
-     * to a PHP native boolean.
-     *
-     * Values that will be recognized as TRUE are 'true', 't' and '1'.
-     *
-     * @access public
-     * @param  string   input value to compare
-     * @return boolean  boolean conversion of the input value
-     */
-    public function bool($val)
-    {
-        if (($val === true) || ($val == 'true') || ($val == 't') || ($val == '1')) {
-            return true;
-        }
-        #elseif (($val === false || $val == 'false' || $val == 'f'))
-        return false;
-    }
-
     /**
      * Prepares a Serendipity query input to fully valid SQL. Replaces certain "template" variables.
      *

lib/Serendipity/Database/DbTools.php

@@ -0,0 +1,31 @@
+<?php
+
+// Serendipity
+// See LICENSE file for license information.
+
+namespace Serendipity\Database;
+
+class DbTools
+{
+    /**
+     * Check whether an input value corresponds to a TRUE/FALSE option in the SQL database.
+     *
+     * Because older DBs could not store TRUE/FALSE values to be restored into a PHP variable,
+     * this function tries to detect what the return code of a SQL column is, and convert it
+     * to a PHP native boolean.
+     *
+     * Values that will be recognized as TRUE are 'true', 't' and '1'.
+     *
+     * @access public
+     * @param  string   input value to compare
+     * @return boolean  boolean conversion of the input value
+     */
+    public function bool($val)
+    {
+        if (($val === true) || ($val == 'true') || ($val == 't') || ($val == '1')) {
+            return true;
+        }
+        #elseif (($val === false || $val == 'false' || $val == 'f'))
+        return false;
+    }
+}