cmd/compile/internal/gc: update comment after c2go
cmd/compile/internal/gc: update comment after c2go

Change-Id: I02c60f6c767e917a8ed3772c2773fe266f781e44
Reviewed-on: https://go-review.googlesource.com/19834
Reviewed-by: Ian Lance Taylor <87e9c6d529889242b7e184afb632328636553ab4@golang.org>

Samurais/go,polyverse-security/go,josharian/go,polyverse-security/go,theif519/go,vsekhar/elastic-go,4ad/go,codestation/go,miolini/go,linux-on-ibm-z/go,codestation/go,ImJasonH/go,akutz/go,derekmarcotte/go,mwhudson/go,polyverse-security/go,golang/go,suncycheng/go,binarycrusader/go,vsekhar/elastic-go,josharian/go,golang/go,suncycheng/go,nawawi/go,nawawi/go,golang/go,suncycheng/go,nawawi/go,ganboing/go-esx,codestation/go,suncycheng/go,theif519/go,binarycrusader/go,derekmarcotte/go,nawawi/go,miolini/go,momchil-velikov/go,linux-on-ibm-z/go,vanloswang/go,theif519/go,suncycheng/go,polyverse-security/go,cloudflare/go,cloudflare/go,vsekhar/elastic-go,goodlang/good,CAFxX/go,mwhudson/go,goodlang/good,josharian/go,derekmarcotte/go,Samurais/go,miolini/go,mwhudson/go,momchil-velikov/go,goodlang/good,ganboing/go-esx,codestation/go,theif519/go,vsekhar/elastic-go,josharian/go,momchil-velikov/go,akutz/go,polyverse-security/go,derekmarcotte/go,derekmarcotte/go,goodlang/good,derekmarcotte/go,vanloswang/go,CAFxX/go,golang/go,cloudflare/go,theif519/go,theif519/go,vsekhar/elastic-go,derekmarcotte/go,golang/go,ImJasonH/go,momchil-velikov/go,cloudflare/go,binarycrusader/go,Samurais/go,josharian/go,miolini/go,akutz/go,vanloswang/go,codestation/go,akutz/go,polyverse-security/go,Cofyc/go,nawawi/go,ganboing/go-esx,akutz/go,momchil-velikov/go,Cofyc/go,akutz/go,binarycrusader/go,miolini/go,CAFxX/go,suncycheng/go,mwhudson/go,vanloswang/go,Samurais/go,linux-on-ibm-z/go,cloudflare/go,codestation/go,Cofyc/go,linux-on-ibm-z/go,josharian/go,derekmarcotte/go,4ad/go,mwhudson/go,cloudflare/go,goodlang/good,akutz/go,momchil-velikov/go,Samurais/go,vanloswang/go,binarycrusader/go,theif519/go,codestation/go,4ad/go,ImJasonH/go,linux-on-ibm-z/go,vsekhar/elastic-go,suncycheng/go,golang/go,vsekhar/elastic-go,nawawi/go,golang/go,miolini/go,goodlang/good,josharian/go,vanloswang/go,cloudflare/go,vanloswang/go,momchil-velikov/go,christopher-henderson/Go,binarycrusader/go,linux-on-ibm-z/go,golang/go,nawawi/go,CAFxX/go,ganboing/go-esx,4ad/go,goodlang/good,binarycrusader/go,ganboing/go-esx,Samurais/go,Cofyc/go,ganboing/go-esx,Cofyc/go,ImJasonH/go,miolini/go,miolini/go,vsekhar/elastic-go,cloudflare/go,ImJasonH/go,Cofyc/go,theif519/go,CAFxX/go,polyverse-security/go,suncycheng/go,ganboing/go-esx,binarycrusader/go,4ad/go,ImJasonH/go,Cofyc/go,ganboing/go-esx,Samurais/go,CAFxX/go,linux-on-ibm-z/go,Cofyc/go,linux-on-ibm-z/go,Samurais/go,vanloswang/go,CAFxX/go,ImJasonH/go,akutz/go,momchil-velikov/go,4ad/go,mwhudson/go,CAFxX/go,codestation/go,josharian/go,mwhudson/go,4ad/go,mwhudson/go,4ad/go,goodlang/good,polyverse-security/go,nawawi/go,ImJasonH/go