Description:
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This worklog is about removing terms from our apis/source code/docs that may be considered racially insensitive. The changes concern the whole MySQL source code, not only related PHP extensions (mysqlnd, mysqli, pdo_mysql).

The terminology to change is as follows:

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Term                                                                           | Replacement
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Blacklist                                                                      | Blocklist
Whitelist                                                                      | Allowlist
Master                                                                         | Source
Slave                                                                          | Replica
Multi-Master Asynchronous Replication (without conflict detection/resolution)  | Circular Replication
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- Existing properties and methods that use the offending terms must be updated to use the new terms.
- The old properties and methods must be retained as deprecated to prevent any bc issue.
- Any references to the offending terms in the source code including comments should be replaced.
- Any references to the offending terms in other files including readme files should be replaced.

In some situations, we may need to wait for an updated server version, hence some occurrences may still exist in code.