Unify "Global" types with SystemTypes.

[jamoore]

Currently, only Experimenter and Event are "Global" types (as defined in the DSL). This means they have no owner/group/event to prevent weird cyclical dependencies. First, Permissions should also be added to this based on how the filter issue is solved (see #117), so that Experimenter and Event always have null details.

And in general, global types should disappear and be replaced by properly configured (i.e. umasks #179 etc.) system types.

[jmoore]

#239 has some discussion on this as well.

[jmoore]

The easiest way to simplify/unify global and system types may to handle the mapping manually. I.e. meta.ome.xml would no longer need to exist or only in stub form (once all are global, see #239), and the actual *.hbm.xml files would override the code generated ones. Then it would be possible in that ome/model/meta package to define a static utility class for do the isSystemType(Class) checks. Useable also then on the client-side to know when an object is not doing to have owner/group/permissions/etc.

This would make the system types (which really should be under ome.model.sys(tem)) the boot strap types, and the only ones which should be referenced with the core classes.

[jmoore]

#239 is marked duplicate. See for more context. Will also have to wait at least until M4 because of database changes (See #373.)

[jmoore]

source:trunk/components/model/src/ome/model/IGlobal.java added in r2103