builds aren't tarred into single directory

I think this is a problem which affects most of our build recipes. The tars contain `bin/`, `lib/`, etc at the root level, rather than being packaged in a much nicer `$pkg_name-$version-$arch/{bin,lib}/` (or similar).

The fact that we don't have "nice" archives means that statements like this are needed: https://github.com/galaxyproject/tools-iuc/pull/179/files#diff-99e82d7ee179c109e1940be4c8994711R8

Start by locating how the build recipes create tar archives and review the linked tools-iuc pull request for the packaging workaround it addresses. The work is done when build outputs consistently place bin/, lib/, and similar directories under a $pkg_name-$version-$arch-style top-level directory.

Written by the indexing model from the issue text.