Better distinguish subcommand log statements by logging description
Better distinguish subcommand log statements by logging description

Now, when subcommands are logged due to the -s option, the action's
description is logged in an bracketed note after the label.

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MOS_MIGRATED_REVID=93886445

bazelbuild/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,davidzchen/bazel-website,bazelbuild/bazel-website,bazelbuild/bazel-website