```
sysctl kern.supported_archs: return correct value
in case COMPAT_FREEBSD32 was enabled in config but hardware does not
support executing 32bit binaries.
```
```
FEATURE compat_freebsd_32bit: only report on arm64 when support is present
depending on hardware support for aarch32.
```
```
Tweak compat_freebsd32_bit feature name
Mark the current name 'compat_freebsd_32bit' as legacy, and add the
new name 'compat_freebsd32'. This seems to help with some make and
shell uses.
```