mips64 SICORTEX: temporarily change default C/ZSCAL to the non-asm implementation

kernel/mips(64): Fix cscal and zscal

kernel/riscv64: Fix cscal/zscal for riscv64_generic

Disable the default SSE kernels for x86_64 CSCAL/ZSCAL for now

Fix PR5281 "kernel/arm64: fix cscal/zscal"

kernel/(x86|sparc): Fix cscal and zscal by reverting to the generic C kernels

kernel/riscv64: Fix cscal and zscal

kernel/zarch: Fix cscal and zscal

kernel/power: Fixed cscal and zscal

kernel/arm64: fixed cscal and zscal

kernel/x86_64: fixed cscal and zscal

kernel/generic: Fixed cscal and zscal

LoongArch64: fixed cscal and zscal

- Calculate predicate outside the loop
- Divide matrix in blocks of 3

kernel/riscv64:fixed the performance problem in RISCV64_ZVL256 when OPENBLAS_K is small

Accumulate results in output register explicitly

- modify the macro conditions in Makefile.system
- Delete development test code

Related to issue#5279

Added shgemm_kernel_8x8 for RISCV64_ZVL128B and shgemm_kernel_16x8 fo…

Added HFLOAT16 support for RISCV64
Added shgemm_kernel_8x8 for RISCV64_ZVL128B and shgemm_kernel_16x8 for RISCV64_ZVL256B based on HFLOAT16
The instruction sets used are ZVFH and ZFH, which need to be supported by RVV1.0

Related to issue #5279
Co-authored-by Linjin Li <linjin_li@163.com>

kernel/riscv64:Optimized the implementation of axpby on TARGET=RISCV64_ZVL256B.

Fix compilation with pre-C99 compilers

Improvement of 2D thread-partitioned GEMM for M << N case

Fix building with mingw32-gcc15