runtime: use standard comment style in cgocall
runtime: use standard comment style in cgocall

Change-Id: I9f2c2da4aa512729ae40562b06601da95ba50d6f
Reviewed-on: https://go-review.googlesource.com/33689
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>
Reviewed-by: Keith Randall <8c99c3a9284e493be632950b84cd789d08ed3e9d@golang.org>

polyverse-security/go,codestation/go,CAFxX/go,akutz/go,CAFxX/go,ImJasonH/go,cloudflare/go,linux-on-ibm-z/go,codestation/go,polyverse-security/go,polyverse-security/go,polyverse-security/go,golang/go,cloudflare/go,CAFxX/go,suncycheng/go,nawawi/go,linux-on-ibm-z/go,codestation/go,cloudflare/go,Cofyc/go,golang/go,josharian/go,ImJasonH/go,suncycheng/go,Cofyc/go,josharian/go,cloudflare/go,goodlang/good,josharian/go,nawawi/go,akutz/go,linux-on-ibm-z/go,goodlang/good,CAFxX/go,josharian/go,linux-on-ibm-z/go,codestation/go,Cofyc/go,cloudflare/go,akutz/go,CAFxX/go,suncycheng/go,vsekhar/elastic-go,goodlang/good,polyverse-security/go,linux-on-ibm-z/go,ImJasonH/go,josharian/go,nawawi/go,golang/go,codestation/go,golang/go,nawawi/go,suncycheng/go,akutz/go,golang/go,akutz/go,CAFxX/go,akutz/go,derekmarcotte/go,suncycheng/go,golang/go,ImJasonH/go,derekmarcotte/go,CAFxX/go,Cofyc/go,Cofyc/go,suncycheng/go,golang/go,goodlang/good,codestation/go,goodlang/good,cloudflare/go,polyverse-security/go,ImJasonH/go,suncycheng/go,derekmarcotte/go,nawawi/go,ImJasonH/go,derekmarcotte/go,Cofyc/go,akutz/go,linux-on-ibm-z/go,polyverse-security/go,josharian/go,vsekhar/elastic-go,josharian/go,goodlang/good,nawawi/go,Cofyc/go,golang/go,ImJasonH/go,suncycheng/go,polyverse-security/go,derekmarcotte/go,cloudflare/go,vsekhar/elastic-go,linux-on-ibm-z/go,Cofyc/go,CAFxX/go,christopher-henderson/Go,goodlang/good,derekmarcotte/go,codestation/go,vsekhar/elastic-go,ImJasonH/go,derekmarcotte/go,josharian/go,vsekhar/elastic-go,cloudflare/go,vsekhar/elastic-go,nawawi/go,goodlang/good,derekmarcotte/go,vsekhar/elastic-go,linux-on-ibm-z/go,vsekhar/elastic-go,codestation/go,akutz/go,nawawi/go