Make undefined and null assignable to each other
Make undefined and null assignable to each other

vilic/TypeScript,mihailik/TypeScript,vilic/TypeScript,samuelhorwitz/typescript,RyanCavanaugh/TypeScript,weswigham/TypeScript,erikmcc/TypeScript,samuelhorwitz/typescript,TukekeSoft/TypeScript,evgrud/TypeScript,jeremyepling/TypeScript,erikmcc/TypeScript,minestarks/TypeScript,jwbay/TypeScript,basarat/TypeScript,DLehenbauer/TypeScript,plantain-00/TypeScript,DLehenbauer/TypeScript,nojvek/TypeScript,thr0w/Thr0wScript,evgrud/TypeScript,jeremyepling/TypeScript,plantain-00/TypeScript,erikmcc/TypeScript,nojvek/TypeScript,Microsoft/TypeScript,Eyas/TypeScript,blakeembrey/TypeScript,plantain-00/TypeScript,nojvek/TypeScript,jwbay/TypeScript,kpreisser/TypeScript,ziacik/TypeScript,RyanCavanaugh/TypeScript,thr0w/Thr0wScript,chuckjaz/TypeScript,basarat/TypeScript,evgrud/TypeScript,jwbay/TypeScript,vilic/TypeScript,donaldpipowitch/TypeScript,alexeagle/TypeScript,donaldpipowitch/TypeScript,ziacik/TypeScript,donaldpipowitch/TypeScript,chuckjaz/TypeScript,alexeagle/TypeScript,TukekeSoft/TypeScript,blakeembrey/TypeScript,thr0w/Thr0wScript,blakeembrey/TypeScript,weswigham/TypeScript,vilic/TypeScript,weswigham/TypeScript,evgrud/TypeScript,DLehenbauer/TypeScript,SaschaNaz/TypeScript,kpreisser/TypeScript,synaptek/TypeScript,Eyas/TypeScript,Eyas/TypeScript,mihailik/TypeScript,kpreisser/TypeScript,synaptek/TypeScript,ziacik/TypeScript,microsoft/TypeScript,DLehenbauer/TypeScript,plantain-00/TypeScript,kitsonk/TypeScript,basarat/TypeScript,chuckjaz/TypeScript,microsoft/TypeScript,erikmcc/TypeScript,chuckjaz/TypeScript,mihailik/TypeScript,microsoft/TypeScript,synaptek/TypeScript,kitsonk/TypeScript,nojvek/TypeScript,samuelhorwitz/typescript,TukekeSoft/TypeScript,SaschaNaz/TypeScript,alexeagle/TypeScript,RyanCavanaugh/TypeScript,Microsoft/TypeScript,thr0w/Thr0wScript,SaschaNaz/TypeScript,Eyas/TypeScript,minestarks/TypeScript,donaldpipowitch/TypeScript,Microsoft/TypeScript,basarat/TypeScript,synaptek/TypeScript,jwbay/TypeScript,mihailik/TypeScript,blakeembrey/TypeScript,minestarks/TypeScript,SaschaNaz/TypeScript,kitsonk/TypeScript,samuelhorwitz/typescript,ziacik/TypeScript,jeremyepling/TypeScript