The patch adds the python script zip2tarcat. It converts a zip archive to a tar archive and write it to the standard output. The script is writen with compatibility in mind. It needs at least python 2.6 (zipfile.open) and it is also tested with python 2.7. I tried hard to make it compatible with python 3, but I failed, see TODO.
The patched script zip to-xz can now read zip archives and an option for timestamp retaining is added.
The INSTALL files is corrected and extended.
The files autoconf/configure.ac and scripts/Makefile.in have the necessary extensions.