[ANN] cpuminer-opt v3.14.3

[Joseph12]

Supporting over 90 agorithms with many optimized for CPUs with the latest technologies:

Intel Haswell: AVX2
AMD Ryzen: AVX2, SHA
Intel Skylake X: AVX512
Intel Icelake: AVX512, SHA, and VAES

Older 64 bit CPUs with SSE2 are also supported, see below for requirements.

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New in v3.14.3
 - 265: more mutex changes to reduce blocking with high thread count.
 - 267: fixed hodl algo potential memory alignment issue, add warning when thread count is not valid for mining hodl algo.

New in v3.14.2
 - The second line of the Share Accepted log is no longer displayed, new Xnonce log is added and other small log tweaks.
 - 265: Cleanup use of mutex.

New in v3.14.1
GBT and getwork log changes:
 - fixed missing TTF in New Block log,
 - ntime no longer byte-swapped for display in New Work log,
 - fixed zero effective hash rate in Periodic Report log,
 - deleted "Current block is..." log.

Renamed stratum "New Job" log to "New Work" to be consistent with the solo
version of the log. Added more data to both versions.

New in v3.14.0
Changes to solo mining:
 - segwit is supported by getblocktemplate,
 - longpolling is not working and is disabled,
 - Periodic Report log is output,
 - New Block log includes TTF estimates,
 - Stratum thread no longer created when using getwork or GBT.