You can clone with
HTTPS or Subversion.
If the mysql extension doesn't exist, API.php's getDBStatus() fails. (This is more apparent when the DBStats plugin is enabled and you run all_tests.php.)
(In ) fixes #2047 - p.s. the only workaround I can think of to get the "Opens" and "Queries per second avg" stats would be to pipe and parse the STATUS output from command line clients (i.e., mysql / mysqladmin)