[gnutls-devel] GnuTLS | x86:add detection of instruction set on Zhaoxin CPU (!1335)

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zzjianhui created a merge request: https://gitlab.com/gnutls/gnutls/-/merge_requests/1335

Project:Branches: zzjianhui/gnutls:fix-padlock to gnutls/gnutls:master
Author:    zzjianhui



Add detection of extended instruction set on Zhaoxin cpu,e.g:ssse3,sha,avx,etc. Set the priority of the algorithm according to the benchmark test result on Zhaoxin cpu.

In hmac-padlock.c, use free to release local variables ctx. Remove a call to wrap_padlock_hmac_deinit() to fix a crash.

This is the previous test situation[test-suite.log](/uploads/b8f0305e2051b3eee16b0a04bf1e22c3/test-suite.log). This is the test situation after adding these codes[test-suite1.log](/uploads/53ac0885f5f2dba7f0f1ac79ca887355/test-suite1.log).

fixes #1094 ,#1079 

## Checklist
 * [x] Commits have `Signed-off-by:` with name/author being identical to the commit author
 * [ ] Code modified for feature
 * [ ] Test suite updated with functionality tests
 * [ ] Test suite updated with negative tests
 * [ ] Documentation updated / NEWS entry present (for non-trivial changes)
 * [ ] CI timeout is 2h or higher (see Settings/CICD/General pipelines/Timeout)

## Reviewer's checklist:
 * [ ] Any issues marked for closing are addressed
 * [ ] There is a test suite reasonably covering new functionality or modifications
 * [ ] Function naming, parameters, return values, types, etc., are consistent and according to `CONTRIBUTION.md`
 * [ ] This feature/change has adequate documentation added
 * [ ] No obvious mistakes in the code

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