jemalloc Files

This release is primarily about Windows. A critical virtual memory leak is resolved on all Windows platforms. The regression was present in all releases since 5.0.0.

Bug fixes: - Fix a severe virtual memory leak on Windows. This regression was first released in 5.0.0. (@Ignition, @j0t, @frederik-h, @davidtgoldblatt, @interwq) - Fix size 0 handling in posix_memalign(). This regression was first released in 5.2.0. (@interwq) - Fix the prof_log unit test which may observe unexpected backtraces from compiler optimizations. The test was first added in 5.2.0. (@marxin, @gnzlbg, @interwq) - Fix the declaration of the extent_avail tree. This regression was first released in 5.1.0. (@zoulasc) - Fix an incorrect reference in jeprof. This functionality was first released in 3.0.0. (@prehistoric-penguin) - Fix an assertion on the deallocation fast-path. This regression was first released in 5.2.0. (@yinan1048576) - Fix the TLS_MODEL attribute in headers. This regression was first released in 5.0.0. (@zoulasc, @interwq)

Optimizations and refactors: - Implement opt.retain on Windows and enable by default on 64-bit. (@interwq, @davidtgoldblatt) - Optimize away a branch on the operator delete path. (@mgrice) - Add format annotation to the format generator function. (@zoulasc) - Refactor and improve the size class header generation. (@yinan1048576) - Remove best fit. (@djwatson) - Avoid blocking on background thread locks for stats. (@oranagra, @interwq)