* gnu/packages/patches/ao-cad-aarch64-support.patch: New patch.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/engineering.scm (ao-cad)[source]: Use it. Update snapshot to
fb288c9. Use VCS helpers for version and file-name.
[arguments]: Add 'remove-native-compilation' phase.
Eric Bavier