* guix/lzlib.scm (%compression-levels): Splice the rest of each element.
(dictionary-size+match-length-limit): New procedure.
(make-lzip-output-port, make-lzip-input-port/compressed): Use it.
* tests/lzlib.scm ("Bytevector of size relative to Lzip internal buffers (2 * dictionary)"):
Use 'dictionary-size+match-length-limit' instead of 'assoc-ref'.
Suggested by Pierre Neidhardt <mail@ambrevar.xyz>.
* guix/lzlib.scm (lzread!): Call 'lz-decompress-finish' when
'feed-decoder!' returns EOF. Call 'lz-decompress-finished?' to
determine end of compression.
* guix/lzlib.scm (lzread!): Do it.
Previously lzread! would fail if COUNT was bigger
than (lz-decompress-write-size). This is possible if a previous call to
lzread! didn't empty the LZ_decompress input buffer (e.g. BV was too small to
fit all the data).
