DB_driver's trans_complete exception fix
Fix Session tests
[ci skip] Remove a changelog line for a non-existent change
Manually apply PR #2234
Disable autoloader call from class_exists() occurences to improve performance

Note: The Driver libary tests seem to depend on that, so one occurence in CI_Loader is left until we resolve that.
DB_result tests seem to also depend on autoloading via the class_exists() checks ...
Fix #2273
Merge pull request #2266 from dionysiosarvanitis/fix/trans_complete

DB_driver's trans_complete exception fix
Merge pull request #2274 from ckdarby/patch-1

Fix #2273
Add CI_Utf8::convert_to_utf8() test
Some miscellaneous tests
CI_Output [set/append/get]_output() tests