Configure the ZopeLite layer, enabling conditional product installation.

Conditionally load zcml on Zope 2.12 and delay the optimize and fortify calls
until after Product initialization by the layer.

Disable printing of profiling information on Zope 2.12 since profiling support
on ZopeTestCase has been removed.

Import copyzopeskel from its proper location on Zope 2.12 (this has a side-
effect of changing slightly the beginning of the test output, suppressing the
"Loading Zope, please stand by ..." initial message). Additionally, add a Zope
2.12 compatible skeleton.

Make sure the skin is configured on the portal object, since it's no longer
configured automatically by acquisition on CMF 2.



git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@30352 20353a03-c40f-0410-a6d1-a30d3c3de9de