* PT-2114 Incorrect casting of BIT columns by pt-archiver
Added special handling of BIT columns, because by default Perl does not properly recognizes
this type and creates invalid query for MySQL.
Removed debugging comment from t/pt-table-checksum/pt-226.t
Added test case.
* PT-2114 Incorrect casting of BIT columns by pt-archiver
Removed debugging comments from t/pt-deadlock-logger/standard_options.t and t/pt-table-checksum/fnv_64.t
* PT-2114 Incorrect casting of BIT columns by pt-archiver
Added test for archiving BIT columns.
* PT-2114 Incorrect casting of BIT columns by pt-archiver
Added test for bulk operations
* PT-2114 Incorrect casting of BIT columns by pt-archiver
Added more tests for BIT columns
* PT-2114 Incorrect casting of BIT columns by pt-archiver
- Improved fix for PT-2123, so it works with 5.7
- Fixed tests for PT-2114, so they work with 5.7