Update changeField() to support changing changing to serial when there is existing data.

Related to #3263493

added 1 commit

• f66c2235 - Changed renameTable to dropTable for the old table

Compare with previous version

added 9 commits

• f66c2235...d298031b - 6 commits from branch project:4.3.x
• 1cb51768 - Update changeField() to support changing changing to serial when there is existing data.
• 0c0797a8 - Changed renameTable to dropTable for the old table
• 75b27b94 - Merge branch '3263493-upgrading-to-drupal' of...

Compare with previous version