Move reclient binaries to src/buildtools.

Move the binaries from src/tools to src/buildtools.  Update both DEPS
and buildtools/DEPS.  The matching checks to PRESUBMIT.py will be in
a following CL.

Bug: 1149386
Change-Id: Iaa420944f510c6e921f6f1366f735a580358ce23
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2575097
Reviewed-by: Dirk Pranke <dpranke@google.com>
Commit-Queue: Michael Savigny <msavigny@google.com>
Cr-Commit-Position: refs/heads/master@{#834754}
GitOrigin-RevId: 8247d2d2675ff3b2ec75e5e7996beda7fea7a16c
2 files changed