cmd/compilebench: import from rsc.io

This CL is an import of compilebench from rsc.io/compilebench
at commit 1a5bec7724500bd6df47e053dbc42b41fe653372.

This CL brings in only main.go, unaltered.
The other files were:

* LICENSE: now unnecessary
* README.md: now unnecessary
* compilecmp: still available at its original home,
  soon to be superceded by a new tool in x/tools

Once compilecmp is available in x/tools,
I will replace rsc.io/compilebench with a breadcrumb repo.

All outstanding pull requests against rsc.io/compilebench are from me.
They will be closed, and new CLs sent here as appropriate.

Change-Id: Ic436abf4a662173c6c184bc765b1b9cab13b3cfb
Reviewed-on: https://go-review.googlesource.com/39712
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
1 file changed