Change Details

`make check` `test_runner.py --extended` [ ] IBD mainnet up to ~2013 with assumevalid off [ ] IBD testnet up to ~2013 with assumevalid off

`make check` `test_runner.py --extended` [x] IBD with -checkpoints=0 and -assumevalid=0 on mainnet: OK up to at least height 216000 (2013 January) [ ] IBD testnet up to ~2013 with assumevalid off

`make check` `test_runner.py --extended` [ x] IBD with -checkpoints=0 and -assumevalid=0 on mainnet: OK up to ~2013 with assumevalid offat least height 216000 (2013 January) [ ] IBD testnet up to ~2013 with assumevalid off