- Disable `vsx` tests for `ppc` and `ppc64`
- Disable `tme` tests for `aarch64` and `aarch64_be`
- Disable `frecipe` tests for `loongarch64`
- Add `altivec` run for PPC32 (with `-C target-feature=+vsx` `qemu` gives a nasty error)
* add some powerpc/powerpc64 altivec/vsx intrinsics
* temporarily make IntoBits/FromBits inline(always)
* include powerpc64 module; use inline(always) from/into_bits only on powerpc