This patch silences the copy message, fixes the public projects,
and makes the copy step a separate target, so it won't run on
every incremental build.

Change-Id: Ie6df39737ad466b6431865b3ca19f66d16437ba9
Reviewed-on: https://chromium-review.googlesource.com/178432Reviewed-by: Geoff Lang <geofflang@chromium.org>
Commit-Queue: Geoff Lang <geofflang@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>