Add autotools-style silent build rules

The V variable can be passed directly to make in order to
enable or disable the silent rules. V=0 (the default) turns
them on, anything other than zero turns them off.
More demarcation between install recipes

Separate install recipes that call other recipes from those
that don't, with the latter doing the actual install work and
the former tying the latter together.

Also fixes a cosmetic issue with the silent rules that results
in missing and incorrect echoing during 'make install'.