test020 inconsistent with SLAPI (ITS#2787)

[hyc@OpenLDAP.org]

Full_Name: Howard Chu
Version: HEAD, 2.2
OS: Linux
URL: 
Submission from: (NULL) (24.126.120.178)
Submitted by: hyc


There are multiple memory leaks in back-meta, proxy caching, etc.
There are several references to uninitialized memory when running the test
script and SLAPI is enabled.

The cache answerability results appear to work on a random basis. Sometimes the
test runs to completion successfully, sometimes it gets differing answerability
results, sometimes it segfaults.

I would upload some traces but the ftp site appears to be down at the moment.