kern.ps_arg_max_cache is a long, not an int. I believe this is half of

what broke ps on ia64.  It probably also broke on alpha, but the fallback
method of using lseek/read on /proc/*/mem to read ps_strings seems to
work there.  It doesn't on ia64 yet.

lib/libkvm/kvm_proc.c

@@ -762,7 +762,7 @@ kvm_getargv(kd, kp, nchr)
 	int oid[4];
 	int i;
 	size_t bufsz;
-	static int buflen;
+	static unsigned long buflen;
 	static char *buf, *p;
 	static char **bufp;
 	static int argc;