[Zope-CMF] broken tests - FSDirectoryViews

[alan runyan]

I just did some changes to Skinnable.py and SkinsContainer.py on a branch,
SkinApplyToSkinnable-branch

I am having 3 unit tests break.  I do not believe this has anything to do
with my changes to the branch.

1. ImportError: No module named pyexpat (I have pyxml 0.8 installed)
2. FAIL: windows INSTANCE_HOME
3. FAIL: windows SOFTWARE_HOME

also it seems that DirectoryViews are hard-wired to 'Products' folder.  so
all my products that were sitting in
$PRODUCTS_PATH are no longer being recognized.

cheers,
~runyaga