completely unrestrict ExplanationCache.getSimulationMovementValueList so that it returns the same value regardless of current user's permission.

Old workflow and workflow chain is not updated as backward compatibility is not yet provided.

Values are not categories anymore longer, they become regular document
(services, products, ...).
The list of those values is controlled by use base_category and
preference configuration.
This improvement will allow users to maintain their list of resources
more easily.

Backward compatibility is provided, categories on documents will still
be displayed (if any) to not break UI.

Usage of those preference will be modified.
Update description of properties to reflect ongoing modifications

This message explain why VCSTool is not able to update a working copy
with local commits, because conflict resolution is not implemented.

Remove EmptyByDefaultListBox_asHTML in listbox and use generic customisation

This reverts commit eac0cc35.

gcc is "incompatible" from version to version in accepted parameters.

previous code is copied in erp5_trade_simulation_legacy business template for backward compatibility. we need to do the same thing on packing_list_workflow.

There is no rule to put install in /usr/bin.

As gcc 4.6.0 treats more warnings as errors, memcached compilation fails.
Solution took from original bug report for memcached.

Do not try to parse contents which are not XML with xml parser.