[Zope] bug in ZSQL method result caching.

a quick note: There appears to be a bug (for me, at least :) in the Result Caching in ZSQL Methods. If you set the cache time to non-zero, then you can no longer use the method. It _appears_ that this is caused by the code on line 400 of lib/python/Shared/DC/ZRDB/DA.py, if self.cache_time_ > 0 and self.self.max_cache_ > 0: removing that duplicate 'self.' makes it work again... (usual disclaimers: works for me, ymmv) Anthony (yes, I put it in the Collector)