Add convention for location of standard runfiles library.
Add convention for location of standard runfiles library.

hlopko@ approved this suggested convention before he left. It's consistent with what we already do in @bazel_tools.

RELNOTES: None
PiperOrigin-RevId: 261629882

ButterflyNetwork/bazel,twitter-forks/bazel,akira-baruah/bazel,twitter-forks/bazel,cushon/bazel,meteorcloudy/bazel,safarmer/bazel,werkt/bazel,aehlig/bazel,dslomov/bazel-windows,werkt/bazel,dslomov/bazel-windows,akira-baruah/bazel,perezd/bazel,katre/bazel,aehlig/bazel,safarmer/bazel,ButterflyNetwork/bazel,dslomov/bazel,safarmer/bazel,dslomov/bazel,perezd/bazel,katre/bazel,ulfjack/bazel,akira-baruah/bazel,bazelbuild/bazel,ulfjack/bazel,ulfjack/bazel,ButterflyNetwork/bazel,dslomov/bazel,dslomov/bazel-windows,werkt/bazel,aehlig/bazel,meteorcloudy/bazel,davidzchen/bazel,aehlig/bazel,perezd/bazel,davidzchen/bazel,bazelbuild/bazel,davidzchen/bazel,dslomov/bazel,dslomov/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,dslomov/bazel,davidzchen/bazel,twitter-forks/bazel,ulfjack/bazel,twitter-forks/bazel,cushon/bazel,perezd/bazel,safarmer/bazel,dslomov/bazel-windows,katre/bazel,werkt/bazel,werkt/bazel,meteorcloudy/bazel,twitter-forks/bazel,davidzchen/bazel,katre/bazel,ulfjack/bazel,perezd/bazel,aehlig/bazel,meteorcloudy/bazel,safarmer/bazel,dslomov/bazel,perezd/bazel,ulfjack/bazel,perezd/bazel,ButterflyNetwork/bazel,akira-baruah/bazel,aehlig/bazel,ulfjack/bazel,davidzchen/bazel,meteorcloudy/bazel,dslomov/bazel-windows,katre/bazel,cushon/bazel,meteorcloudy/bazel,bazelbuild/bazel,cushon/bazel,werkt/bazel,bazelbuild/bazel,twitter-forks/bazel,twitter-forks/bazel,dslomov/bazel-windows,akira-baruah/bazel,safarmer/bazel,bazelbuild/bazel,cushon/bazel,akira-baruah/bazel,cushon/bazel,davidzchen/bazel,aehlig/bazel,katre/bazel,meteorcloudy/bazel,ButterflyNetwork/bazel