add related info to error for use of for-await-of in non-async function
add related info to error for use of for-await-of in non-async function

weswigham/TypeScript,nojvek/TypeScript,kitsonk/TypeScript,kpreisser/TypeScript,kitsonk/TypeScript,alexeagle/TypeScript,weswigham/TypeScript,SaschaNaz/TypeScript,RyanCavanaugh/TypeScript,nojvek/TypeScript,RyanCavanaugh/TypeScript,Microsoft/TypeScript,minestarks/TypeScript,alexeagle/TypeScript,microsoft/TypeScript,microsoft/TypeScript,kpreisser/TypeScript,Microsoft/TypeScript,SaschaNaz/TypeScript,SaschaNaz/TypeScript,minestarks/TypeScript,nojvek/TypeScript,kitsonk/TypeScript,Microsoft/TypeScript,SaschaNaz/TypeScript,alexeagle/TypeScript,microsoft/TypeScript,weswigham/TypeScript,nojvek/TypeScript,kpreisser/TypeScript,minestarks/TypeScript,RyanCavanaugh/TypeScript