allow sinan to build a full and complete release
allow sinan to build a full and complete release

This changes sinan to basically do the same thing as reltool, just not
in a stupid broken way the way reltool does. It keeps version by name,
understands different versions and should be installable side by side
with multiple versions of the release.

Signed-off-by: Jordan Wilberding <220780119b0515e812290c52572d947e9668976c@gmail.com>

ericbmerritt/sinan,erlware-deprecated/sinan,ericbmerritt/sinan,ericbmerritt/sinan,erlware-deprecated/sinan,erlware-deprecated/sinan