Update sigar_os_sys_info_get for the removal of Gestalt and add support for OSX 10.8 / Mountain Lion
Update sigar_os_sys_info_get for the removal of Gestalt and add support for OSX 10.8 / Mountain Lion

racker/sigar,racker/sigar,racker/sigar,racker/sigar,racker/sigar,racker/sigar,racker/sigar,racker/sigar,racker/sigar,racker/sigar