dummy tag for commits on master

This is a dummy tag so that `git describe` no longer shows everything
relative to v0.9.0rc2 just because that was the last version to be tagged
on master instead of on a branch.

Bitcoin Core 0.16.0 final

Bitcoin Core 0.16.0 release candidate 4

Bitcoin Core 0.16.0 release candidate 3

Bitcoin core 0.16.0 release candidate 2

Bitcoin Core 0.16.0 release candidate 1

release 0.15.1

0.15.1 release candidate 1

Bitcoin Core 0.15.0.1

bitcoin core 0.15.0 final