Use only 3 levels for defining the version
The version is defined with 3 levels: major.minor.rev (e.g. 0.20.2).
There is an additional 4th leve defined as the build version wich is
always set to zero in our releases.
This diff removes the extra level in the version number.
Build on all platforms, then:
bitcoind -version bitcoinqt -version bitcoin-cli -version bitcoin-tx -help
Run the gitian builds on all platforms.
Generate the man pages and check the version number has 3 levels.
Reviewers: #bitcoin_abc, deadalnix
Reviewed By: #bitcoin_abc, deadalnix
Differential Revision: https://reviews.bitcoinabc.org/D4148