[#480] SysArchMeter to view kernel/arch info

At start, SysArchMeter calls the uname function to obtain the kernel
version and architecture. If available, the distro version is obtained
by calling lsb_release. The obtained values are stored in static
variables and used when updating the meter.

freebsd/Platform.c

@@ -42,6 +42,7 @@ in the source distribution for its full text.
 #include "ProcessList.h"
 #include "Settings.h"
 #include "SwapMeter.h"
+#include "SysArchMeter.h"
 #include "TasksMeter.h"
 #include "UptimeMeter.h"
 #include "XUtils.h"
@@ -103,6 +104,7 @@ const MeterClass* const Platform_meterTypes[] = {
    &UptimeMeter_class,
    &BatteryMeter_class,
    &HostnameMeter_class,
+   &SysArchMeter_class,
    &AllCPUsMeter_class,
    &AllCPUs2Meter_class,
    &AllCPUs4Meter_class,