Bug 2003105

Rebase package(s) to version: 8.0.26 Highlights, important fixes, or notable enhancements: * The MySQL client library now includes a mysql_real_connect_dns_srv() C API function that is similar to mysql_real_connect() but uses a DNS SRV record * mysql client program is modified to use DNS SRV capability; it now supports a --dns-srv-name option that takes precedence over --host and causes the connection to be based on a DNS SRV record * A prepared statement is now prepared only once, when executing PREPARE, rather than once each time it is executed * GCC 10 is now a supported compiler for building MySQL on EL7 or EL8 * Incompatible Change: Instrumentation in the Performance Schema setup_instruments table (See: https://dev.mysql.com/doc/relnotes/mysql/8.0/en/news-8-0-24.html#mysqld-8-0-24-performance-schema) * Incompatible Change: From MySQL 8.0.26, new aliases or replacement names are provided for most remaining identifiers that contain the terms “master”, which is changed to “source”; “slave”, which is changed to “replica”; and “mts” (for “multithreaded slave”), which is changed to “mta” (for “multithreaded applier”). All of the changes can be found on the official MySQL website: https://dev.mysql.com/doc/relnotes/mysql/8.0/en/