Import internal commit 24ce89a2bf25de8f79e38749fa1fdc2113668bae : Remove calculation of 'BSLMA_SIZE_IS_SIGNED'.
Import internal commit 24ce89a2bf25de8f79e38749fa1fdc2113668bae : Remove calculation of 'BSLMA_SIZE_IS_SIGNED'.

minhlongdo/bde,gbleaney/Allocator-Benchmarks,abeels/bde,minhlongdo/bde,bloomberg/bde,apaprocki/bde,jmptrader/bde,bloomberg/bde-allocator-benchmarks,idispatch/bde,abeels/bde,idispatch/bde,dharesign/bde,dharesign/bde,saxena84/bde,apaprocki/bde,abeels/bde,dbremner/bde,mversche/bde,osubboo/bde,bowlofstew/bde,osubboo/bde,bowlofstew/bde,jmptrader/bde,frutiger/bde,bloomberg/bde-allocator-benchmarks,gbleaney/Allocator-Benchmarks,apaprocki/bde,dbremner/bde,dbremner/bde,RMGiroux/bde-allocator-benchmarks,mversche/bde,bloomberg/bde,saxena84/bde,bloomberg/bde-allocator-benchmarks,che2/bde,RMGiroux/bde-allocator-benchmarks,bloomberg/bde-allocator-benchmarks,che2/bde,frutiger/bde,RMGiroux/bde-allocator-benchmarks,che2/bde,bowlofstew/bde,idispatch/bde,bloomberg/bde-allocator-benchmarks,RMGiroux/bde-allocator-benchmarks,osubboo/bde,abeels/bde,saxena84/bde,minhlongdo/bde,osubboo/bde,bloomberg/bde,bloomberg/bde,dharesign/bde,minhlongdo/bde,mversche/bde,gbleaney/Allocator-Benchmarks,che2/bde,RMGiroux/bde-allocator-benchmarks,apaprocki/bde,frutiger/bde,idispatch/bde,bloomberg/bde,jmptrader/bde,apaprocki/bde,abeels/bde,frutiger/bde,saxena84/bde,jmptrader/bde,gbleaney/Allocator-Benchmarks,dbremner/bde,abeels/bde,dharesign/bde,mversche/bde,bowlofstew/bde