efd41dceb1
mdoc man page covering all modes and the OTS/ingest long options, verified with groff and NetBSD mandoc. CMake installs the binary and the man page (guarded against add_subdirectory embedding). Also corrects the stale direction-1 comment in the DOSBox round-trip script: multi-file archives created by v3 have extracted fine in the original since the custom-Huffman-tree fix.