In commit d8ee8d0c99c3820951e2e49dbdb71a5390bd1dc4 we made use of
fakeroot absolutely mandatory, and disabled a lot of the code which
checked to see if this now-defunct BUILDENV option was set, before
setting up the environment to use fakeroot. Unfortunately, we missed one
spot.
The check_software routine still checked to see if fakeroot was
enabled, but due to the option being removed, thought that it was in
fact disabled, and as a result this check would never run.
Fix by checking to see if we are trying to build either a package or a
source package, and if so, checking for fakeroot. These are the only two
situations where fakeroot is needed.
Signed-off-by: Eli Schwartz