partial merge -r1173:1174 from branch-1_6 to trunk: new configuration

parameter die_on_sql_error (upgrade.php and install/upgrade_*.php not
concerned on BSF)

partial merge -r1208:1209 from branch-1_6 to trunk (only bug fix on
incorrect insertion of complex upgrade identifiers)

deletions: upgrade.php and all install/upgrade_*.php because these script
are never up to date on BSF. Anyway, they are only required on a stable
branch.


git-svn-id: http://piwigo.org/svn/trunk@1221 68402e56-0260-453c-a942-63ccdbb3a9ee

include/functions.inc.php

@@ -651,12 +651,22 @@ function get_thumbnail_src($path, $tn_ext = '', $with_rewrite = true)
 // error occured for the last mysql query.
 function my_error($header)
 {
+  global $conf;
+  
   $error = '<pre>';
   $error.= $header;
   $error.= '[mysql error '.mysql_errno().'] ';
   $error.= mysql_error();
   $error.= '</pre>';
-  die ($error);
+
+  if ($conf['die_on_sql_error'])
+  {
+    die($error);
+  }
+  else
+  {
+    echo $error;
+  }
 }
 
 /**