Bug#733411: Recommend compiling in a clean chroot?

["Rebecca N. Palmer" <r.palmer@bham.ac.uk>]

This problem would be noticed before upload if the maintainer used a 
clean chroot to (try to) build the package, and I get the impression 
that this is recommended, but the Developers' Reference and New 
Maintainers' Guide don't actually say so. 
(http://www.debian.org/doc/manuals/maint-guide/build.en.html#pbuilder is 
the closest they come.)  Should they be changed as well?