Finish build mode (directory traversal and ownership override)
Finish options handling, remove cli.txt
Reconsider error handling, maybe prepend program name to messages
chown, install, and mknod wrappers/replacements to append to override file(s)
opkbuild helper to set PATH
ob-buildenv needs to define OPK_WORK_AREA with work area absolute path
Mention ownership changes without (fake) privileges as feature in README
Finish documenting functions
Manual page
Build with recent GCC, fix warnings
Update POT
Test: build sample package(s) and install with opkg-lede
Search ProteanOS package archive for packages with GNU long names (gcc maybe)?
ob-buildopk should use opkg-opk instead of find/touch/chown/sort/tar/gzip
	Maybe only if opkg-opk is in Build-Depends, to opt into experiment?
opkbuild should depend on opkg-opk, prokit should use if available in root