adding test for CVE
Merge branch '3-2-later' into 3-2-stable

* 3-2-later:
  adding test for CVE
Correctly parse bigint defaults in PostgreSQL, Backpost #10098.

Conflicts:

	activerecord/CHANGELOG.md
	activerecord/lib/active_record/connection_adapters/postgresql_adapter.rb
	activerecord/test/cases/schema_dumper_test.rb
Merge pull request #10172 from senny/10098_backport

Backport: Correctly parse bigint defaults in PostgreSQL
Document nested attributes as hash of hashes

Document the possibility to use a hash of hashes for nested attributes for a one-to-many association (in addition to the documented possibility to use an array of hashes).

Align indentation in comments.
Merge pull request #9688 from alexeymuranov/doc-nested-attributes-3-2

3-2-stable documentation: the possibility to use a hash of hashes for nested attributes
Merge branch '3-2-stable' of git://github.com/rails/rails into 3-2-stable