runtime: fix goc2c for rename to goc2c and *.goc
runtime: fix goc2c for rename to goc2c and *.goc

Release 2010-04-27. runtime: rename cgo2c, *.cgo to goc2c, *.goc
to avoid confusion with real cgo.

R=rsc
CC=golang-dev
http://codereview.appspot.com/1868047

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

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