have_$engine are deprecated and will be removed in MySQL 5.6, and some
of them are either missing in some versions before that or show wrong
values - see e.g. MySQL bugs #47286 and #59393.
Fixed memory calculation problem in NetBSD where the amount of memory overflowed a 32-bit integer. Used "sysctl -n hw.physmem64" rather than "sysctl -n hw.physmem" in those situations. (Thanks to Dave Burgess)
Fixed an issue where the script would suggest adding skip-isam to the MySQL configuration in 4.0.x, but the directive wasn't available until 4.1.1. (Thanks to Ryan Novosielski)
Fixed an issue with MySQL 5.1 where table_open_cache needed to be adjusted, rather than open_cache. (Thanks to Michael Scheidell and Blair Christensen)
Adjusted some misleading wording when MySQL's memory usage is very high relative to the amount of physical memory installed. Increased threshold to 90%. (Thanks to Hans du Plooy)
Fixed an issue where MySQL logins failed when a socket was specified but a .my.cnf file was also present. (Thanks to Victor Trac)
Added full support for Solaris. (Big thanks to Bill Bradford)
Added --socket option to use an alternative socket (thanks Mark!)
Added OpenBSD memory checking support (thanks Giovanni!)
Added counts to report lines to provide additional detail
Fixed error where disabling BDB was recommended even when BDB tables were present (thanks Greg!)
Fixed an issue with big integers (> 2^32) from key calculations (thanks Aubin!)
Fixed an error on Solaris machines (thanks Bill!)
Fixed an issue where the key buffer calculation caused errors when no indexes were present
Added Giovanni Bechis, Greg Eden, Aubin Galinotti, Mark Imbriaco and Bill Bradford to the contributors list
Support is now available for remote servers
Can force the script to assume that a certain amount of memory is present (thanks Jason!)
Usernames and passwords can now be passed on the command line
Added Jason Gill to the contributors list
Added checks for fragmented tables
Fixed login routine to allow zero-length passwords without re-prompting for the password repeatedly
Added workaround for wget 1.11 timestamping bug
Fixed a math error in the temporary table calculations
Fixed an error that occurred when the status variable Open_files returned zero
Added table cache change in preparation for MySQL 6.x
Thanks to Ville Skytta, Trent Hornibrook and Luuk Vosslamber for the bug reports and feature requests!
Added an option to skip the enumeration/sizing of tables (--skipsize), which should help on servers with lots of tables
Changed the table enumeration/sizing method for MySQL 5 to use information_schema (increased performance drastically)
Adjusted the query_cache_limit recommendation to include the currently set value, rather than 1M each time
Changed the wording for tmp_table_size/max_heap_table_size to make it less confusing
Corrected a bug where storage engine statuses were still in color even with --nocolor.
Excluded information_schema tables from calculations (they were showing up as usual MEMORY tables).
