Move macroblock encoding out to prepare for block size switching.
Move macroblock encoding out to prepare for block size switching.

KyleSiefring/daala,luctrudeau/daala,jmvalin/daala,iankronquist/daala,mbebenita/daala,kbara/daala,metajack/daala,tdaede/daala,vr000m/daala,ekr/daala,kodabb/daala,jmvalin/daala,jmvalin/daala,tribouille/daala,xiphmont/daala,tdaede/daala_awcy_runs,tdaede/daala_awcy_runs,tdaede/daala,felipebetancur/daala,metajack/daala,xiphmont/daala,vr000m/daala,KyleSiefring/daala,iankronquist/daala,ycho/daala,kbara/daala,smarter/daala,vr000m/daala,luctrudeau/daala,mbebenita/daala,vr000m/daala,xiph/daala,kbara/daala,iankronquist/daala,xiph/daala,nvoron23/daala,felipebetancur/daala,luctrudeau/daala,ekr/daala,KyleSiefring/daala,ascent12/daala,ycho/daala,kodabb/daala,HeadhunterXamd/daala,ascent12/daala,luctrudeau/daala,mbebenita/daala,tribouille/daala,ascent12/daala,jmvalin/daala,fluffy/daala,tribouille/daala,kustom666/daala,ascent12/daala,kustom666/daala,xiph/daala,felipebetancur/daala,iankronquist/daala,KyleSiefring/daala,felipebetancur/daala,HeadhunterXamd/daala,smarter/daala,ycho/daala,kustom666/daala,tdaede/daala,ascent12/daala,kustom666/daala,nvoron23/daala,kustom666/daala,HeadhunterXamd/daala,xiph/daala,iankronquist/daala,kodabb/daala,fluffy/daala,kbara/daala,fluffy/daala,felipebetancur/daala,xiphmont/daala,mbebenita/daala,smarter/daala,nvoron23/daala,ekr/daala,mbebenita/daala,luctrudeau/daala,KyleSiefring/daala,ycho/daala,ycho/daala,nvoron23/daala,xiph/daala,nvoron23/daala,tribouille/daala,kodabb/daala,HeadhunterXamd/daala,jmvalin/daala,xiphmont/daala,vr000m/daala,smarter/daala,metajack/daala,xiphmont/daala,tribouille/daala,tdaede/daala,HeadhunterXamd/daala,kodabb/daala,tdaede/daala_awcy_runs,tdaede/daala_awcy_runs