start with bbdb-site.el.in, process it into bbdb-site.el solely at make time
tweak bbdb-site.el.in to bbdb-site.el generation process

Use a more symmetric and robust token for where the real tex directory
belongs in lisp/bbdb-site.el.in

Use "sed -e", which is POSIX, instead of "sed --expression", which ain't.

Add appropriate automake magic to cause bbdb-site.el to be generated
following reconfiguration, to be generated early as it might be
"required" by other lisp source files, and to be included in the
distribution tarball.
allow for POSIX date command in timestamp determination
Merge branch 'suggest-v3.x' into debian-v3.x