Improve scheme for creating unique type parameter names
Improve scheme for creating unique type parameter names

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