Bazel client: add helper methods for Windows paths
Bazel client: add helper methods for Windows paths

See https://github.com/bazelbuild/bazel/issues/2107

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PiperOrigin-RevId: 143950681
MOS_MIGRATED_REVID=143950681

meteorcloudy/bazel,juhalindfors/bazel-patches,ButterflyNetwork/bazel,LuminateWireless/bazel,kchodorow/bazel-1,cushon/bazel,hermione521/bazel,hermione521/bazel,bazelbuild/bazel,ulfjack/bazel,ButterflyNetwork/bazel,twitter-forks/bazel,damienmg/bazel,bazelbuild/bazel,safarmer/bazel,spxtr/bazel,dropbox/bazel,perezd/bazel,aehlig/bazel,hermione521/bazel,kchodorow/bazel-1,ulfjack/bazel,damienmg/bazel,aehlig/bazel,perezd/bazel,ulfjack/bazel,juhalindfors/bazel-patches,damienmg/bazel,ButterflyNetwork/bazel,variac/bazel,spxtr/bazel,ulfjack/bazel,snnn/bazel,davidzchen/bazel,perezd/bazel,snnn/bazel,katre/bazel,davidzchen/bazel,perezd/bazel,Asana/bazel,davidzchen/bazel,hermione521/bazel,davidzchen/bazel,katre/bazel,katre/bazel,damienmg/bazel,dslomov/bazel,ulfjack/bazel,Asana/bazel,juhalindfors/bazel-patches,snnn/bazel,werkt/bazel,kchodorow/bazel,variac/bazel,bazelbuild/bazel,ButterflyNetwork/bazel,LuminateWireless/bazel,LuminateWireless/bazel,snnn/bazel,dslomov/bazel,twitter-forks/bazel,juhalindfors/bazel-patches,cushon/bazel,werkt/bazel,dslomov/bazel-windows,kchodorow/bazel-1,aehlig/bazel,akira-baruah/bazel,davidzchen/bazel,kchodorow/bazel,kchodorow/bazel,katre/bazel,bazelbuild/bazel,safarmer/bazel,spxtr/bazel,aehlig/bazel,kchodorow/bazel,Asana/bazel,juhalindfors/bazel-patches,cushon/bazel,bazelbuild/bazel,snnn/bazel,ulfjack/bazel,hermione521/bazel,katre/bazel,meteorcloudy/bazel,meteorcloudy/bazel,damienmg/bazel,safarmer/bazel,akira-baruah/bazel,kchodorow/bazel,snnn/bazel,dslomov/bazel-windows,Asana/bazel,dropbox/bazel,juhalindfors/bazel-patches,spxtr/bazel,akira-baruah/bazel,katre/bazel,bazelbuild/bazel,perezd/bazel,variac/bazel,kchodorow/bazel-1,akira-baruah/bazel,dslomov/bazel,LuminateWireless/bazel,safarmer/bazel,cushon/bazel,kchodorow/bazel,meteorcloudy/bazel,Asana/bazel,ButterflyNetwork/bazel,LuminateWireless/bazel,meteorcloudy/bazel,spxtr/bazel,dslomov/bazel-windows,spxtr/bazel,twitter-forks/bazel,dslomov/bazel,perezd/bazel,twitter-forks/bazel,variac/bazel,ButterflyNetwork/bazel,dslomov/bazel-windows,dropbox/bazel,Asana/bazel,snnn/bazel,meteorcloudy/bazel,twitter-forks/bazel,werkt/bazel,variac/bazel,juhalindfors/bazel-patches,Asana/bazel,safarmer/bazel,cushon/bazel,dslomov/bazel-windows,dslomov/bazel-windows,dropbox/bazel,akira-baruah/bazel,ulfjack/bazel,aehlig/bazel,meteorcloudy/bazel,twitter-forks/bazel,perezd/bazel,werkt/bazel,aehlig/bazel,LuminateWireless/bazel,davidzchen/bazel,twitter-forks/bazel,variac/bazel,dslomov/bazel,spxtr/bazel,cushon/bazel,akira-baruah/bazel,kchodorow/bazel,aehlig/bazel,davidzchen/bazel,dropbox/bazel,dslomov/bazel,dslomov/bazel,hermione521/bazel,dropbox/bazel,damienmg/bazel,kchodorow/bazel-1,werkt/bazel,werkt/bazel,kchodorow/bazel-1,variac/bazel,safarmer/bazel,damienmg/bazel