It is all about one bug fix, one little feature, one step at a time.
Armin Schöffmann fixed a bug (Deadlock in mysql_real_query with shared memory connections, is what Armin calls it), Armin signed the Sun Contributor Agreement (24 March 2009), Vladislav Vaintroub and Davi Arnaut reviewed, committed and queued the patch to MySQL 5.0 bug team (26 and 27th of March, 2009).
That's a great example of open, contribution-based MySQL development with real results.
Thank you Armin!
Thank you Vlad!
Thank you Chad!
Thank you Davi!
Thank you ... the one whose name I've left out! (Feel free to leave a comment below.)