Xu Cheng 203000cee6 update-test: allow setting start commit ...

To use origin/master as start commit
  brew update-test

To use <sha1> as start commit
  brew update-test --commit=<sha1>

To use commit at <date> as start commit
  brew update-test --before=<date>

Also print start/end commit for debug purpose

2015-12-19 22:05:30 +08:00

..

aspell-dictionaries.rb

…

update-test.rb

update-test: allow setting start commit

2015-12-19 22:05:30 +08:00