Add Daniel Black to authors

sql/authors.h

@@ -79,6 +79,7 @@ struct show_table_authors_st show_table_authors[]= {
   { "Willhan", "Shenzhen, China", "Big Column Compression, Spider engine optimization, from Tencent Game DBA Team" },
   { "Anders Karlsson", "Ystad, Sweden", "Replication patch for enforcing triggers on slave"},
   { "Otto Kekäläinen", "Tampere, Finland", "Debian packaging, install/upgrade engineering, QA pipelines, documentation"},
+  { "Daniel Black", "Canberra, Australia", "Modernising large page support, systemd, and bug fixes"},
 
   /* People working on MySQL code base (not NDB) */
   { "Guilhem Bichot", "Bordeaux, France", "Replication (since 4.0)" },