Log Message:
Introduce DJB_MAKE_TARGETS boolean, on by default, off in the
following packages because they don't use "it" and "setup check"
as BUILD_TARGET and INSTALL_TARGET, respectively:

devel/bglibs
mail/mailfront
mail/qmail-qfilter
sysutils/memtester
sysutils/qlogtools

Since there's only one consumer of BGWARE_INSTALLER, and future
bgware will use bg-installer from bglibs, move the do-install
routine directly into qlogtools.