Enhance testCacheTool:

  * commit transactions after each calls of CachingMethod in order to push
data into memcached backend (For DistributedRamCache plugins)
  * Add a test for DistributedRamCache with flare as backend,
to test long keys (more than 1024 Bytes) and large values (More
than 25MB)
  * Check that memcached.Client instances are not mixed in connection pool
(see r34441).


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@34442 20353a03-c40f-0410-a6d1-a30d3c3de9de