jemalloc: update to 4.3.1

from Jonathan Buschmann in PR pkg/51631
ok gson

Changelog :

4.3.1

Bug fixes:

    Fix a severe virtual memory leak. This regression was first released in 4.3.0. (@interwq, @jasone)
    Refactor atomic and prng APIs to restore support for 32-bit platforms that use pre-C11 toolchains, e.g. FreeBSD's mips. (@jasone)

4.3.0

This is the first release that passes the test suite for multiple Windows configurations, thanks in large part to @glandium setting up continuous integration via AppVeyor (and Travis CI for Linux and OS X).

New features:

    Add "J" (JSON) support to malloc_stats_print(). (@jasone)
    Add Cray compiler support. (@ronawho)

Optimizations:

    Add/use adaptive spinning for bootstrapping and radix tree node initialization. (@jasone)

Bug fixes:

    Fix large allocation to search starting in the optimal size class heap, which can substantially reduce virtual memory churn and fragmentation. This regression was first released in 4.0.0. (@mjp41, @jasone)
    Fix stats.arenas..nthreads accounting. (@interwq)
    Fix and simplify decay-based purging. (@jasone)
    Make DSS (sbrk(2)-related) operations lockless, which resolves potential deadlocks during thread exit. (@jasone)
    Fix over-sized allocation of radix tree leaf nodes. (@mjp41, @ogaun, @jasone)
    Fix over-sized allocation of arena_t (plus associated stats) data structures. (@jasone, @interwq)
    Fix EXTRA_CFLAGS to not affect configuration. (@jasone)
    Fix a Valgrind integration bug. (@ronawho)
    Disallow 0x5a junk filling when running in Valgrind. (@jasone)
    Fix a file descriptor leak on Linux. This regression was first released in 4.2.0. (@vsarunas, @jasone)
    Fix static linking of jemalloc with glibc. (@djwatson)
    Use syscall(2) rather than {open,read,close}(2) during boot on Linux. This works around other libraries' system call wrappers performing reentrant allocation. (@kspinka, @Whissi, @jasone)
    Fix OS X default zone replacement to work with OS X 10.12. (@glandium, @jasone)
    Fix cached memory management to avoid needless commit/decommit operations during purging, which resolves permanent virtual memory map fragmentation issues on Windows. (@mjp41, @jasone)
    Fix TSD fetches to avoid (recursive) allocation. This is relevant to non-TLS and Windows configurations. (@jasone)
    Fix malloc_conf overriding to work on Windows. (@jasone)
    Forcibly disable lazy-lock on Windows (was forcibly enabled). (@jasone)

(maya)