Add custom fields tables to the upgrade scripts.
Use config options instead of constants for table names.
Add upgrades to fix the double escaping problems in old db data.

• upgrade_warning.php: go to upgrade_list.php instead of upgrade.php

• upgrade_list.php: new file that gives a list of upgrade sets

• upgrade.php:

• upgrade_advanced.php:
  give a link to return the upgrade list page

• upgrade_inc.php:

• upgrades/0_13_inc.php:

• upgrades/0_14_inc.php:

• upgrades/0_15_inc.php:

• upgrades/0_16_inc.php:
  use config options to get table names

• upgrades/0_17_inc.php:

  • use config options to get table names
  • add upgrade to drop mantis_project_customization table if it exists
  • add upgrades to add the custom fields tables

• db_table_names_inc.php: new file that loads all the table names from
  config options into global variables

• upgrade_escaping.php: new file that does the db escaping fix upgrades

• upgrades/0_17_escaping_fixes_inc.php: new file that actually contains
  the upgrades for the double escaping fixes

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@1853 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9