[migration] don't handle data deletion anymore on schema changes
In most cases when we want to drop some entity/relation type, we don't care
whether hooks are called on their deletion. There is even low chances that some
hooks still exists, based on an old version of the schema. Last but not least,
this is horribly inefficient.
So this should be clearly documented and handled by application's programmer if
desired.
This patch removes unnecessary deletion (because table or column will be later
dropped) and reimplements the case of partial deletion (only one relation
definition among several, hence the database structure isn't modified) using
sql.
Only one test regarding deletion of inlined relation def is added as other cases
seem to be covered by existing tests.
Closes #7023315
include README
include COPYING
include COPYING.LESSER
include pylintrc
include bin/cubicweb-*
include man/cubicweb-ctl.1
include doc/*.rst
include doc/Makefile
recursive-include doc/book *
recursive-include doc/tools *.py
recursive-include doc/tutorials *.rst *.py
include doc/api/*.rst
recursive-include doc/_themes *
recursive-include doc/_static *
include doc/_templates/*.html
include doc/changes/*.rst
recursive-include doc/dev .txt *.rst
recursive-include doc/images *.png *.svg
include doc/conf.py
recursive-include misc *.py *.png *.display
include web/views/*.pt
recursive-include web/data external_resources *.js *.css *.py *.png *.gif *.ico *.ttf *.svg *.woff *.eot
recursive-include web/wdoc *.rst *.png *.xml ChangeLog*
recursive-include devtools/data *.js *.css *.sh
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* *.conf.in *.ldif
recursive-include devtools/test/data bootstrap_cubes *.py *.txt *.js *.po.ref
recursive-include web/test/data bootstrap_cubes pouet.css *.py
recursive-include etwist/test/data *.py
recursive-include web/test/jstests *.js *.html *.css *.json
recursive-include web/test/windmill *.py
recursive-include skeleton *.py *.css *.js *.po compat *.in *.tmpl rules
prune doc/book/en/.static
prune doc/book/fr/.static
prune doc/html/_sources/
prune misc/cwfs
prune doc/js_api
global-exclude *.pyc