Fixes testShiftIndexesStartingAtIndex.  Upward shifting no longer throws.
Fixes testShiftIndexesStartingAtIndex.  Upward shifting no longer throws.

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