This allows options to be marked as beta, which will require that the --beta option be supplied to prevent accidental usage of a beta feature.
The online and command-line documentation also show warnings when options are beta.
The prior range checking was done based on the valid values for gz. While this worked it was a subset of what is available for lz4 and zst.
Allow the range to be specified for each compress-type. Adding this functionality to the parse module would be a better solution but that is a bigger project than this fix deserves, at least for now.
Command-line help is now generated at build time so it does not need to be committed. This reduces churn on commits that add configuration and/or update the help.
Since churn is no longer an issue, help.auto.c is bzip2 compressed to save space in the binary.
The Perl config parser (Data.pm) has been moved to doc/lib since the Perl build path is no longer required.
Likewise doc/xml/reference.xml has been moved to src/build/help/help.xml since it is required at build time.
