[Zope-CMF] [dev] CMF trunk dependencies

[yuppie]

Hi!


If there are no objections I'll make Zope 2.8.1 the required platform 
for CMF trunk/1.6 and remove the Zope 2.8.0 backwards compatibility code.

Reasons:

- I hope some day CMF-tseaver-z3_interfaces-branch will be finished and 
merged. To do that right we need the new Interfaces.bridge.

- PluginIndexes, ZCTextIndex and ZCatalog have some new interfaces that 
are useful to write portal_catalog setup adapters.

- The recently added i18n MessageIDs are ignored in Zope 2.8.0.


Cheers,

	Yuppie