Turn glibtop::machine from a value to a pointer, allocated on init.

This hides the glibtop_machine implementation.

src/daemon/server.c

@@ -26,6 +26,7 @@
 #include <glibtop/union.h>
 #include <glibtop/sysdeps.h>
 #include <glibtop/error.h>
+#include <glibtop/machine.h>
 
 #include <sys/utsname.h>
 
@@ -75,6 +76,8 @@ main(int argc, char *argv[])
 	}
 #endif
 
+	glibtop_machine_new (glibtop_global_server);
+
 	glibtop_init_p (glibtop_global_server, 0, 0);
 
 	glibtop_debug ("uid=%d euid=%d gid=%d egid=%d", getuid(), geteuid(), getgid(), getegid());