[release-branch.go1.15-security] cmd/go: overwrite program name with full path

If the program path is resolved, replace the first argument of the
exec.Cmd, which is the bare program name with the resolved path.

Change-Id: I92cf5e6f4bb7c8fef9b59f5eab963f4e75b90d07
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/957908
Reviewed-by: Katie Hockman <katiehockman@google.com>
Reviewed-by: Russ Cox <rsc@google.com>
Reviewed-by: Jay Conrod <jayconrod@google.com>
(cherry picked from commit a863cb56b33a24aad88f23f1d48629dc4b4b9539)
Reviewed-on: https://team-review.git.corp.google.com/c/golang/go-private/+/958254
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
1 file changed
tree: 88910bb0f8e2496049ee1f6b9cd31e6139e66cb1
  1. .github/
  2. api/
  3. doc/
  4. lib/
  5. misc/
  6. src/
  7. test/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. CONTRIBUTING.md
  12. CONTRIBUTORS
  13. favicon.ico
  14. LICENSE
  15. PATENTS
  16. README.md
  17. robots.txt
  18. SECURITY.md
  19. VERSION
README.md

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