go/types: rename (historic) flag "-list" used for go/types testing
go/types: rename (historic) flag "-list" used for go/types testing

Rename -list flag to -errlist to avoid confusion with the go
test flag -list (introduced later).

This flag is only needed to get an error list when running the
go/types test harness manually on select files, e.g., as in:

	go test -run=Check -files=x.go -errlist

Change-Id: I67febcf968d2d8f4ff00c81eea7b2df723560eac
Reviewed-on: https://go-review.googlesource.com/84378
Run-TryBot: Robert Griesemer <a6752097faebf1f02d80107d77a9be009089afe3@golang.org>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

christopher-henderson/Go,CAFxX/go,nawawi/go,codestation/go,golang/go,cloudflare/go,akutz/go,akutz/go,CAFxX/go,Cofyc/go,codestation/go,Cofyc/go,cloudflare/go,golang/go,golang/go,golang/go,akutz/go,Cofyc/go,golang/go,codestation/go,nawawi/go,cloudflare/go,codestation/go,Cofyc/go,josharian/go,akutz/go,nawawi/go,akutz/go,CAFxX/go,codestation/go,josharian/go,CAFxX/go,codestation/go,Cofyc/go,Cofyc/go,codestation/go,josharian/go,josharian/go,josharian/go,josharian/go,cloudflare/go,Cofyc/go,nawawi/go,josharian/go,golang/go,akutz/go,nawawi/go,CAFxX/go,nawawi/go,akutz/go,nawawi/go,cloudflare/go,CAFxX/go,Cofyc/go,CAFxX/go,cloudflare/go,cloudflare/go,CAFxX/go,josharian/go,golang/go,nawawi/go,codestation/go,golang/go,akutz/go,cloudflare/go