Make the Joomla! Upgrade easier by including commented lines in file

When doing a Joomla upgrade of civicrm you must do this:

edit the file HOME/com_civicrm/configure.php and make the following changes on line 120 (approx). THIS IS VERY IMPORTANT. MAKE SURE YOU FIND THE RIGHT FILE AND THE RIGHT FUNCTION

function civicrm_source( $fileName ) {
global $dsn, $crmPath;

require_once 'DB.php';

TO

function civicrm_source( $fileName ) {

return;

global $dsn, $crmPath;

require_once 'DB.php';

Change the configure.php file to:

function civicrm_source( $fileName ) {

//Uncomment next line if doing an upgrade.
// return;

global $dsn, $crmPath;

require_once 'DB.php';

(It can be confusing to find the exact right location since there are similar lines in various files)
Of course, better yet put in code o detect an existing installation.