[#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.

linux/Platform.c

@@ -49,6 +49,7 @@ in the source distribution for its full text.
 #include "SELinuxMeter.h"
 #include "Settings.h"
 #include "SwapMeter.h"
+#include "SysArchMeter.h"
 #include "SystemdMeter.h"
 #include "TasksMeter.h"
 #include "UptimeMeter.h"
@@ -162,6 +163,7 @@ const MeterClass* const Platform_meterTypes[] = {
    &LoadMeter_class,
    &MemoryMeter_class,
    &SwapMeter_class,
+   &SysArchMeter_class,
    &HugePageMeter_class,
    &TasksMeter_class,
    &UptimeMeter_class,