MKit current version; this can be added in templates to aid maintenance
and debugging issues related to MKit.

The package name as used in distributions.

But apply at least minimal safeguards from running `rm -rf /` or
similar catastrophic cases.

Make it clear what's related to the packaged project.

Turns out that the old version has always shown the last tag available
instead of last tag available *so far*, i.e. up to the current HEAD.

This made it impossible to determine version correctly when an older
version was checked out, i.e. installing or packaging an older version
would result in broken versioning.

Add flexiblility for more specialized targets

Actually ShellCheck was *right* that the variable expansion needed to
take care of spaces in paths, but the fix (g:b68913c in ffoo repo) was
totally wrong and only broke things.

Lessons learned:

 *  *Do* run ShellCheck et al., but still **DO CAREFULLY** consider
    effects in the particular context.

 *  Too much coffee, repetitive work *and* distraction is a good way
    to ask for trouble.