MySQL prior to 5.6.6 does not allow renaming columns that are referenced by other columns.
Fixed with https://github.com/phpmyadmin/phpmyadmin/commit/733e5430f09b364f03803cd08035d9e81e9d3287
Fixed with https://github.com/phpmyadmin/phpmyadmin/commit/733e5430f09b364f03803cd08035d9e81e9d3287