[boost] Boost.Build -q fix for 1.45

Subject: [boost] Boost.Build -q fix for 1.45
From: Vladimir Prus (vladimir_at_[hidden])
Date: 2010-11-16 12:10:15

On IRC, Philipp Reh reported that 1.45 beta will fail if Boost.Build is 
invoked with -q, and any configuration test fails. The reason is that
while Steven fixed this on trunk some time ago, I failed to merge to
release branch. Since this bug means that Boost will outright not
build in some cases, and since the fix is not really new, I think
it should be checked in to release branch even at this point.

The proposed diff is this:

        http://codepad.org/eoeawRoG

Any objections before I go ahead?

- Volodya