wm: teppich

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add libc/lllen.c, size of a linked list

--- /dev/null

+++ b/libc/lllen.c

@@ -1,0 +1,17 @@

+#include <u.h>

+

+int

+lllen(ll_t *head)

+{

+	int i;

+	ll_t *t;

+	

+	t = head;

+	i = 0;

+	while(t != nil)

+	{

+		i++;

+		t = t->next;

+	}

+	return i;

+}