odoo/upgrade#8047

Created by Upgrade, Carsten Wolff (cawo)

label

odoo-dev:master-imp_make_pickleable_callback_preserve_same_file-cawo

head

b1b91776f1b1a7be38dfdbcc8a9703e7639ed86b

	odoo/upgrade	odoo/upgrade-util
master	#8047 missing r+	#295 missing r+

[IMP] *: use util.make_pickleable_callback where applicable

There is no longer a need to copy this code and its lengthy comment around the place since we have that util.

Needs odoo/upgrade-util#295 for the cases, where the util is called multiple times from the same script.

> Warning Please follow and check the relevant boxes for your PR, otherwise the review may take longer.

For a PR that adds a new upgrade script (for the Odoo's master branch or one of the RR versions):
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> Note More info can be found in the wiki.