check_hddtemp: init
check_hddtemp: removed line because it draws to the legend
added gitignore
check_ifstat: init
check_ifstat: fix: var2 should be an line
check_iostat: added await, rs, ws and utilisation
check_iostat: fix: rs line used the value of ws
check_mem: init
check_mem: added warn and crit line
initail release von check_mpstat
check_mpstat: better color diff
check_mpstat: Thicker lines beucase the colors are hard to differ
check_mpstat: Nicer graphs
initial release: check_mysql_command.php