cache_end_transaction(), and cache_start_sub_transaction()).
* Further work on the test application, it's now actually usable, first test
passes.
* dump_block() did erroneously print 'B' for the dirty flag; now both dirty and
discard have the 'D' (3rd and 5th column).
* block_cache::LowMemoryHandler() is now private (and got an underscore prefix).
* Minor cleanup, shuffled some methods around.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@28508 a95241bf-73f2-0310-859d-f6bbb57e9c96