K 10 svn:author V 6 jasone K 8 svn:date V 27 2007-12-28T07:24:19.000000Z K 7 svn:log V 338 Maintain two trees instead of one (old_chunks --> old_chunks_{ad,szad}) in order to support re-use of multi-chunk unused regions within the DSS for huge allocations. This generalization is important to correct function when mmap-based allocation is disabled. Avoid zeroing re-used memory in the DSS unless it really needs to be zeroed. END