PERFORCE change 133522 for review

[Bruce M. Simpson]

Warner Losh wrote:
> http://perforce.freebsd.org/chv.cgi?CH=133522
>
> Change 133522 by imp at imp_paco-paco on 2008/01/18 05:25:09
>
> 	Prefer ${SHELL} to sh, since I like it.  Sadly, I got complaints
> 	when I proposed it for -current.
>   

The source of the objection might be that GNU make is known to prefer 
bash -- and I've torn my hair out on more than one occasion because of 
this behaviour.

However, buildenv is a target which explicitly forks an interactive 
shell, so the use of SHELL seems reasonable in this instance.

cheers
BMS