Now
MAIN commitmail json YAML
Set MYSQL_VERSION from within mysql.buildlink3.mk simialrly
to what pgsql.buildlink3.mk does for PostgreSQL.
And while here, document PGSQL_VERSION as variable set by
pgsql.buildlink3.mk
to what pgsql.buildlink3.mk does for PostgreSQL.
And while here, document PGSQL_VERSION as variable set by
pgsql.buildlink3.mk