No UNIX compatible pax implementation

There is no opensource pax version, which fully implements the UNIX standard as
referenced by the LSB 3.2 and 4.0 spec (for example pax file format is missing,
maybe more).

This is in violation that LSB should only specify what is in common use and
available as open source.

Either LSB spec documents this as "exception" or whatever, or even better, pax
should be removed from LSB spec. There is no real advantage, there is no
maintained open source package and most other packager like tar are in wider
use and much better.