Revert "Rails3: test: replace deprecated errors.on at test_creating_a_child_in_different_project_should_not_validate of unit/issue_nested_set_test.rb"

This reverts commit 37cf288bc52aa3eee087b6154c78724afe37c1de.
Rails3: test: replace deprecated errors.on at test_creating_a_child_in_different_project_should_not_validate of unit/issue_nested_set_test.rb

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@7594 e93f8b46-1217-0410-a6f0-8f06a7374b81
Revert "Rails3: test: replace deprecated errors.on at test_moving_an_issue_to_a_descendant_should_not_validate of unit/issue_nested_set_test.rb"

This reverts commit ae7f987b8e9d8968c605dff5b9f3198a1f29c2e9.
Rails3: test: replace deprecated errors.on at test_moving_an_issue_to_a_descendant_should_not_validate of unit/issue_nested_set_test.rb

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@7617 e93f8b46-1217-0410-a6f0-8f06a7374b81
Revert "Rails3: test: replace deprecated errors.on at test/unit/auth_source_ldap_test.rb"

This reverts commit f112e81b692d122fa4e4e7ae82a33daa940451e3.
Rails3: test: replace deprecated errors.on at test/unit/auth_source_ldap_test.rb