Collector #1429: Unbusted key/value traversal of ZSQL methods. Please note that __bobo_traverse__ and __getattr__ hooks in partnership may be hazardous to your health! ;^)

missing out on __traceback_supplement__.

Fixes issue with AcceleratedHTTPCacheManager sending PURGE from a 
virtual-hosted zope, and adds a bunch of related tests and comments.

for strings, i believe...

ProductDispatcher's __bobo_traverse__ now checks all products registered in Control_Panel.Products rather than simply checking the python Products namespace package.

spaces.

and a corresponding Five trunk

Merge from svn+ssh://regebro@svn.zope.org/repos/main/Zope/branches/regebro-wsgi_support2