unified most db upgrades:

- common way is to check on result ($r mostly) of db upgrade
- on success, return UPDATE_SUCCESS
- on failure, return UPDATE_FAILED

Signed-off-by: Roland Häder <roland@mxchange.org>

update.php

@@ -568,6 +568,7 @@ function update_1069() {
 	q("ALTER TABLE `fcontact` ADD `request` CHAR( 255 ) NOT NULL AFTER `photo` ");
 }
 
+/// @TODO Still meeded?
 // mail body needs to accomodate private photos
 
 function update_1070() {