getModificationDate: sometimes _p_serial cannot be used for DateTime ( TimeError: The time -2208988800.000000 is beyond the range of this Python implementation. )

When running multiple parralel ingestion updating documents inplace,
manage_delObjects complains that object is already removed (which is not the
case)

Note that after applying this change it's important to clear preferred timezone
for system preferences, as they have priority over user preferences

LongRequestLogger from zope svn which should support mutiple thread according to Leonardo + hack to log mysql query

ERP5VCS: fix error with recent versions of Git when there's no upstream configured for current branch

constraint_type should be a string instead of a list.

fixup! fix unicodeconflictresolver that was causing the same error when logging the problematic text

fillRecursivePathList could load massive amounts of objects (ex:
all signatures below portal_synchronizations) even if no object was to
be removed. Instead, just iterate given lists (objects handled by
current instance, and actions to perform) and do as much rocessng before
actually attempt to load any object.

Sadly, the data structures available to this code induce an ugly O(n*m)
code, which may be optimised to O(m + log(n)) with more complex code if
really needed (but then, data structure should be improved, with a much
broader effect).

It was unreliable because done only for the first test.
Code needing this information can simply call startZServer, which will simply
return host/port of already started ZServer.

because the list of threads for Anonymous should be provided through predicate in Web Section, not from the module itself.

this commit prevents generating needless activities at the beginning of tests.

No specific role should be defined for test-related portal_types.

ERP5ProjectUnitTestDistributor.startTestSuite doesn't know about computer_guid parameter.

Conflicts:

	bt5/erp5_test_result/bt/revision

Conflicts:
	bt5/erp5_test_result/bt/revision
	bt5/erp5_test_result/bt/template_document_id_list
	bt5/erp5_test_result/bt/template_extension_id_list
(cherry picked from commit 63c1fc09)

Conflicts:

	bt5/erp5_test_result/TestTemplateItem/portal_components/test.erp5.testTaskDistribution.py
	bt5/erp5_test_result/bt/revision

This is a new preference for uses of resources that can be used when creating a response to an event. The create response dialog uses it in two places:
- Only resources with this uses are proposed
- Only notification messages that creates events with resource with this use are proposed

For example, Sale Supply Lines/Cells can be customized to return values for
the caller of Movement.getPriceCalculationOperandDict

This is implemented by first changing Composition so that a model can
define several lines with same reference, masking inherited ones.

There is actually no compatibility issue, because previously, the result would
have been undefined (composition only keeping a random line).

'display_id' expects a property name and 'display_method' a method name