Make.common: add .PHONY rule to prevent files named 'clean', 'bench', etc... preventing proper build
Make.common: add .PHONY rule
to prevent files named 'clean', 'bench', etc... preventing proper build

R=golang-dev, rsc
CC=golang-dev
http://codereview.appspot.com/1976044

Committer: Russ Cox <5ad239cb8a44f659eaaee0aa1ea5b94947abe557@golang.org>

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