- Patch #698502 by jhodgdon, cha0s: improved database requirements documentation.

INSTALL.txt

@@ -22,7 +22,8 @@ Drupal requires:
    or greater) (http://www.postgresql.org/), or SQLite (3.4.2 or greater)
    (http://www.sqlite.org/).
 
-For more detailed information about Drupal requirements, see "Requirements"
+For more detailed information about Drupal requirements, including a list of
+PHP extensions and configurations that are required, see "System requirements"
 (http://drupal.org/requirements) in the Drupal handbook.
 
 For detailed information on how to configure a test server environment using