Switch power to use O3 instead of Ofast

Ofast enables possibly unsafe optimizations in addition to O3. This
appears to have been added and then just continually copied into later
Power architectures, and it wasn't included in the CMake build system
when that was introduced.

Replace this with O3 so that the same level of optimization is done by
the compiler.

merge back from 0.3.0 to copy tag

Update from develop for 0.3.30 release

Update the Changelog for version 0.3.30

Add .note.GNU-stack in ARM epilogue to avoid writable stack

Add .section .note.GNU-stack in ARM assembly epilogue on Linux/ELF targets to
avoid warnings about a writable/executable stack and ensure shared objects do
not require an executable stack.

Signed-off-by: minicx <minicx@disroot.org>

Support AmpereOne/OneA as NeoverseN1 in DYNAMIC_ARCH builds

Work around X86 POTRS/CDOT bug on old systems and add CI job for 32bit manylinux

Bug Fix: Problem with identifying some ARM64 processors

Fix missing initialization leading to bypassing corner cases in C/ZGEQP3RK (Reference-LAPACK PR #1131)

* relax leading dimensions check (Reference-LAPACK PR #1126)

Fix 2nd dimension used by LAPACKE_c/zunmlq in NaN check and transposition (Reference-LAPACK PR #1135)

fix source file used for sbgemmt/sbgemmtr in CMake builds

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