Share Error code tables across components

It would be great to have a way to globalize error codes across different components. This would make it very powerful for developing distributed applications and plugin concept, and could include "exception propagation" for injected components.

The simplest concept would be just to have a line like

which then reads in central error codes.

The issue names no files, tests, or entry points. Start by locating how component error codes are defined and how XML configuration is parsed, then determine how a shared globalerrors.xml would be loaded across components. Done should include an agreed design for shared codes and exception propagation, plus coverage for the import behavior.

Written by the indexing model from the issue text.