bug in mdconfig -l (does not list all devices)

[Andrey V. Elsukov]

Hi, on CURRENT it work's good. 
Here is one PR related to this problem:
http://www.freebsd.org/cgi/query-pr.cgi?pr=bin/92062

> Is it a bug or is it a desired feature, that mdconfig -l doesn't list 
> all devices, but only last 95 devices?
> root at grimm2 ~/# mdconfig -l
> md545 md546 md547 md548 md549 md550 md551 md552 md553 md554 md555 md556 
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WBR, Andrey V. Elsukov