[bfss] fix file update to ensure file's content is available on the fs asap...
and not only at commit time. So it's consistent with entity creation behaviour.
The new file is created at assignement time and removed if the commit is
rollbacked.
include README
include COPYING
include COPYING.LESSER
include pylintrc
include bin/cubicweb-*
include man/cubicweb-ctl.1
recursive-include doc README makefile *.conf *.py *.rst *.txt *.html *.png *.svg *.zargo *.dia
recursive-include misc *.py *.png *.display
include web/views/*.pt
recursive-include web/data external_resources *.js *.css *.py *.png *.gif *.ico *.ttf
recursive-include web/wdoc *.rst *.png *.xml ChangeLog*
recursive-include i18n *.pot *.po
recursive-include schemas *.py *.sql
recursive-include test/data bootstrap_cubes *.py *.sql
recursive-include entities/test/data bootstrap_cubes *.py
recursive-include sobjects/test/data bootstrap_cubes *.py
recursive-include hooks/test/data bootstrap_cubes *.py
recursive-include server/test/data bootstrap_cubes *.py source*
recursive-include web/test/data bootstrap_cubes *.py
recursive-include devtools/test/data bootstrap_cubes *.py *.txt
recursive-include skeleton *.py *.css *.js *.po compat *.in *.tmpl
prune misc/cwfs
prune goa