sysstat version 12.7.2 final packaging.
Changelog added.
spec and lsm files updated.

This version adds a new activity to sar and sadf: Batteries power
statistics, which can be displayed using option "-m BAT".
Output has also been improved so that healthy metrics values (for all
sysstat commands) will no longer be displayed in "red" (or any other
specific color).
Last, starting and ending times can now be entered as a nuumber of
seconds since the Epoch with sar and sadf's options -s/-e.

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