[C++] Implement benchmark comparison between two git revisions

[asfimport]

It would be a good thing to be able to write

benchmark-compare-revisions.sh $HASH1 $HASH2

and to be output a table of benchmark before/after/change for each C++ benchmark, to assess the performance impact of patches

Reporter: Wes McKinney / @wesm
Assignee: Francois Saint-Jacques / @fsaintjacques

Related issues:

• [Benchmarking] Performs a benchmark run with archery (blocks)
• [Benchmarking] Support for on-demand and automated benchmarks (blocks)

PRs and other links:

• GitHub Pull Request #4141

_{Note: This issue was originally created as ARROW-4827. Please see the migration documentation for further details.}

[asfimport]

Antoine Pitrou / @pitrou:
Issue resolved by pull request 4141
#4141