Changes in version 1.0:

The new option "--format" has been added to all utilities.

Zgrep no more prefixes the file name to the output by default when
searching one file and "--recursive" has not been selected.

A deadlock in zcmp, which happens when the "-n" option is used, has been
fixed.

Decompressors are now invoked without the "-q" option except if
explicitly requested, as some simplified implementations do not accept
it.

Minor fixes.

Quote characters in messages have been changed as advised by GNU Coding
Standards.

Configure option "--datadir" has been renamed to "--datarootdir" to
follow GNU Standards.

The target "install-bin" has been added to the Makefile.

Information has been added to the INSTALL file about how to install
zutils along with GNU gzip.