Merge #13066: Migrate verify-commits script to python, run in travis

e5b2cd8e7564b9fc2ed4f63fe49efb0af60b4460 Use python instead of slow shell script on verify-commits (Chun Kuan Lee)

Pull request description:

  The cron job that runs every day would fail because of git checkout a single commit, not a branch.

  #12708 introduce a method to check whether merges are clean.
  However, there are four merges are not clean.
  So, I add a list of merges that are dirty and ignore them.

  Also, I modify the current shell script to python, it makes the script speed up a lot.
  The python code `tree_sha512sum` was copied from `github-merge.py`

  I've re-designed this. Now we verify all the things by default.
  - Add `--disable-tree-check` option, not to check SHA-512 tree
  - Add `--clean-merge NUMBER` option, only verify commits after <NUMBER> days ago

  Travis running time:

  |option|time|
  |-|-|
  |verify-commits.py|[25m47.02s(1547.02s)](https://travis-ci.org/ken2812221/bitcoin/jobs/373321423)|
  |verify-commits.py --disable-tree-check|[19m10.08s(1150.08s)](https://travis-ci.org/ken2812221/bitcoin/jobs/373321423)|
  |verify-commits.py --clean-merge 30|[9m18.18s(558.18s)](https://travis-ci.org/ken2812221/bitcoin/jobs/373321423)|
  |verify-commits.py --disable-tree-check --clean-merge 30|[1m16.51s(76.51s)](https://travis-ci.org/ken2812221/bitcoin/jobs/373321423)|

  Since the cron job always fail, I've created a respository to verify this daily.
   [![Build Status](https://travis-ci.org/ken2812221/bitcoin-verify-commits.svg?branch=master)](https://travis-ci.org/ken2812221/bitcoin-verify-commits)

Tree-SHA512: 476bcf707d92ed3d431ca5642e013036df1506120d3dd2aa718f74240063ce856abd78f4c948336c2a6230dfe5c60c6f2d52d19bdb52d647a1c5f838eaa02e3b

0 files changed, 0 insertions, 0 deletions