Properly handle identity relation for mapped types
Properly handle identity relation for mapped types

Eyas/TypeScript,RyanCavanaugh/TypeScript,mihailik/TypeScript,RyanCavanaugh/TypeScript,mihailik/TypeScript,thr0w/Thr0wScript,mihailik/TypeScript,erikmcc/TypeScript,donaldpipowitch/TypeScript,basarat/TypeScript,thr0w/Thr0wScript,DLehenbauer/TypeScript,donaldpipowitch/TypeScript,TukekeSoft/TypeScript,synaptek/TypeScript,weswigham/TypeScript,jwbay/TypeScript,Eyas/TypeScript,donaldpipowitch/TypeScript,weswigham/TypeScript,RyanCavanaugh/TypeScript,kitsonk/TypeScript,synaptek/TypeScript,kpreisser/TypeScript,microsoft/TypeScript,kpreisser/TypeScript,Microsoft/TypeScript,chuckjaz/TypeScript,DLehenbauer/TypeScript,DLehenbauer/TypeScript,jwbay/TypeScript,thr0w/Thr0wScript,chuckjaz/TypeScript,minestarks/TypeScript,chuckjaz/TypeScript,TukekeSoft/TypeScript,alexeagle/TypeScript,synaptek/TypeScript,chuckjaz/TypeScript,jwbay/TypeScript,SaschaNaz/TypeScript,microsoft/TypeScript,kitsonk/TypeScript,kitsonk/TypeScript,nojvek/TypeScript,jwbay/TypeScript,Eyas/TypeScript,nojvek/TypeScript,Eyas/TypeScript,DLehenbauer/TypeScript,SaschaNaz/TypeScript,minestarks/TypeScript,nojvek/TypeScript,synaptek/TypeScript,basarat/TypeScript,basarat/TypeScript,thr0w/Thr0wScript,erikmcc/TypeScript,basarat/TypeScript,nojvek/TypeScript,Microsoft/TypeScript,minestarks/TypeScript,Microsoft/TypeScript,erikmcc/TypeScript,SaschaNaz/TypeScript,TukekeSoft/TypeScript,alexeagle/TypeScript,mihailik/TypeScript,SaschaNaz/TypeScript,donaldpipowitch/TypeScript,alexeagle/TypeScript,weswigham/TypeScript,microsoft/TypeScript,kpreisser/TypeScript,erikmcc/TypeScript