Initial support for valueForKey: supporting sets and arrays.
Initial support for valueForKey: supporting sets and arrays.

Reviewed by me.

enquora/cappuccino,tolmasky/cappuccino,koamac/Cappuccino,Rosch/cappuccino,daboe01/cappuccino,AlexanderMazaletskiy/cappuccino,wangshijin/cappuccino,rgv151/cappuccino,daboe01/cappuccino,krodelin/cappuccino,FrankReh/cappuccino,dgvivero/CappCoreData,FrankReh/cappuccino,AlexanderMazaletskiy/cappuccino,AlexanderMazaletskiy/cappuccino,Dogild/cappuccino,enquora/cappuccino,koamac/Cappuccino,krodelin/cappuccino,primalmotion/cappuccino,koamac/Cappuccino,dgvivero/CappCoreData,280north/cappuccino,Rosch/cappuccino,krodelin/cappuccino,280north/cappuccino,kidaa/cappuccino,FrankReh/cappuccino,deltaprojects/cappuccino,dgvivero/CappCoreData,kidaa/cappuccino,wangshijin/cappuccino,deltaprojects/cappuccino,tolmasky/cappuccino,AlexanderMazaletskiy/cappuccino,Dogild/cappuccino,enquora/cappuccino,tancred/cappuccino,rgv151/cappuccino,mrcarlberg/cappuccino,AlexanderMazaletskiy/cappuccino,tancred/cappuccino,cacaodev/cappuccino,Dogild/cappuccino,primalmotion/cappuccino,tolmasky/cappuccino,tancred/cappuccino,cacaodev/cappuccino,cappuccino/cappuccino,AlexanderMazaletskiy/cappuccino,zittix/cappuccino,cacaodev/cappuccino,cappuccino/cappuccino,mrcarlberg/cappuccino,wangshijin/cappuccino,cappuccino/cappuccino,tancred/cappuccino,cacaodev/cappuccino,Rosch/cappuccino,deltaprojects/cappuccino,rgv151/cappuccino,kidaa/cappuccino,cacaodev/cappuccino,Dogild/cappuccino,zittix/cappuccino,primalmotion/cappuccino,daboe01/cappuccino,tolmasky/cappuccino,Rosch/cappuccino,Rosch/cappuccino,dgvivero/CappCoreData,enquora/cappuccino,zittix/cappuccino,daboe01/cappuccino,tancred/cappuccino,Rosch/cappuccino,enquora/cappuccino,rgv151/cappuccino,rgv151/cappuccino,deltaprojects/cappuccino,koamac/Cappuccino,krodelin/cappuccino,daboe01/cappuccino,kidaa/cappuccino,deltaprojects/cappuccino,enquora/cappuccino,mrcarlberg/cappuccino,koamac/Cappuccino,primalmotion/cappuccino,wangshijin/cappuccino,280north/cappuccino,krodelin/cappuccino,deltaprojects/cappuccino,cacaodev/cappuccino,deltaprojects/cappuccino,cappuccino/cappuccino,Dogild/cappuccino,mrcarlberg/cappuccino,zittix/cappuccino,eventualbuddha/cappuccino,eventualbuddha/cappuccino,zittix/cappuccino,zittix/cappuccino,primalmotion/cappuccino,krodelin/cappuccino,tolmasky/cappuccino,kidaa/cappuccino,kidaa/cappuccino,FrankReh/cappuccino,mrcarlberg/cappuccino,tancred/cappuccino,cappuccino/cappuccino,280north/cappuccino,Dogild/cappuccino,enquora/cappuccino,cacaodev/cappuccino,daboe01/cappuccino,eventualbuddha/cappuccino,mrcarlberg/cappuccino,cappuccino/cappuccino,Dogild/cappuccino,zittix/cappuccino,daboe01/cappuccino,wangshijin/cappuccino,mrcarlberg/cappuccino,rgv151/cappuccino,FrankReh/cappuccino,280north/cappuccino,FrankReh/cappuccino,primalmotion/cappuccino,cappuccino/cappuccino,FrankReh/cappuccino,FrankReh/cappuccino,koamac/Cappuccino,krodelin/cappuccino,dgvivero/CappCoreData,primalmotion/cappuccino,Rosch/cappuccino,mrcarlberg/cappuccino,wangshijin/cappuccino,eventualbuddha/cappuccino,rgv151/cappuccino