Finish build mode (directory traversal and ownership override)
Finish options handling, remove cli.tct
Reconsider error handling, maybe prepend program name to messages
chown and install wrappers/replacements to append to ownership override file
opkbuild helper to set PATH
SPF 2.0 and ob-buildenv need to define an env var 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