Add token functions to improve modulebuilder compatiblity with maintained versions.

htdocs/core/lib/functions.lib.php

@@ -7944,3 +7944,24 @@ function isAFileWithExecutableContent($filename)
     }
     return false;
 }
+
+/**
+ * Return the value of token currently saved into session with name 'newtoken'.
+ * This token must be send by any POST as it will be used by next page for comparison with value in session.
+ *
+ * @return  string
+ */
+function newToken()
+{
+	return $_SESSION['newtoken'];
+}
+
+/**
+ * Return the value of token currently saved into session with name 'token'.
+ *
+ * @return  string
+ */
+function currentToken()
+{
+	return $_SESSION['token'];
+}