dist/prepare: accept out=arch/dist/host
dist/prepare: add -D to show dist
dist/prepare: add -v to print everything
dist/prepare: also show objdir in -v
dist/collect: indent
dist/collect: add 'dist' section
dist/collect: indent again
dist/collect: show ID_LIKE, reuse single subshell

Ubuntu has ID_LIKE=debian, for example.
dist/collect: sort arch