Added missing const qualifiers.

* loadavg.c: (glibtop_get_loadavg_s):
	* msg_limits.c:
	* sem_limits.c:
	* shm_limits.c: Added missing const qualifiers.

sysdeps/solaris/shm_limits.c

@@ -27,7 +27,7 @@
 #include <kvm.h>
 #include <sys/shm.h>
 
-static struct nlist nlst[] = { {"shminfo"}, {NULL} };
+static const struct nlist nlst[] = { {"shminfo"}, {NULL} };
 static const unsigned long _glibtop_sysdeps_shm_limits =
 (1L << GLIBTOP_IPC_SHMMAX) + (1L << GLIBTOP_IPC_SHMMIN) +
 (1L << GLIBTOP_IPC_SHMMNI) + (1L << GLIBTOP_IPC_SHMSEG);