Separated MegaRaid BBU checks into a inherited class and module.
Added a megacli() method to lib/python2/nagios_plugins/check_megaraid.py
Finished method megacli()
Added first checks to lib/python2/nagios_plugins/check_megaraid_bbu.py
Checking, whether the adapter is present
Considered some corner cases in MegaRaid BBU check.
Cosmetics
Merge branch 'develop'