sysstat-12.0.0

sysstat-12.0.0

sysstat version 12.0.0 final packaging.
lsm file updated.
Typo fixed in sadf.c.
Changelog added.

Version 12.0.0 mainly focuses on SVG output from the sadf command,
with a lot of bugfixes and the addition of a new option ("showtoc")
that will enable the user to quickly navigate through graphs.
Version 12.0.0 is also the first stable version that includes the new,
compact and flexible binary format for sar.

Signed-off-by: Sebastien GODARD <sysstat@users.noreply.github.com>