git-codereview: use cmd prefix on command implementation funcs

The name space is getting a bit crowded.
These words are too easy to use for other variables or functions.

Change-Id: Iedbccb82f85627fe422a029a6b45ad39a2e18dd0
Reviewed-on: https://go-review.googlesource.com/3627
Reviewed-by: Rob Pike <r@golang.org>
9 files changed
tree: 990d7911a535819c70b1c9548d74246c09e7f45d
  1. .gitattributes
  2. README
  3. git-codereview/