Applefiles with resource forks fail to lapply to APFS volumes

[MacTroy]

If lapply is targeting an APFS-formatted volume, any applefiles that have resource forks will fail to be created. The error is:

filename.radmind.321/..namedfork/rsrc: No such file or directory

This is because on APFS volumes, the "..namedfork/rsrc" path is not available unless the file in question already has a resource fork attached. I've submitted a pull request with a patch for retr.c that fixes this.