Avoids potential naming conflicts with other build systems. Change-Id: Ib6569cc05c028d5680879724304b17dfc1fae0af Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/49306 Commit-Queue: Akira Baruah <akirabaruah@google.com> Reviewed-by: Rob Mohr <mohrr@google.com> Reviewed-by: Nathaniel Brough <nathaniel.brough@gmail.com> Reviewed-by: Wyatt Hepler <hepler@google.com>