qemu: Change qemuDomainGetEmulatorPinInfo bitmap manipulation
qemu: Change qemuDomainGetEmulatorPinInfo bitmap manipulation

Follow-up to the IOThread review on CPU affinity map manipulation:

http://www.redhat.com/archives/libvir-list/2015-March/msg00294.html

indicates that the GetEmulatorPinInfo could use similar algorithm adjustments
which is what this patch does.

crobinso/libvirt,eskultety/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,rlaager/libvirt,eskultety/libvirt,rlaager/libvirt,datto/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,agx/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,VenkatDatta/libvirt,jfehlig/libvirt,crobinso/libvirt,libvirt/libvirt,nertpinx/libvirt,agx/libvirt,shugaoye/libvirt,eskultety/libvirt,agx/libvirt,VenkatDatta/libvirt,nertpinx/libvirt,nertpinx/libvirt,libvirt/libvirt,taget/libvirt,eskultety/libvirt,datto/libvirt,olafhering/libvirt,zippy2/libvirt,eskultety/libvirt,datto/libvirt,andreabolognani/libvirt,olafhering/libvirt,crobinso/libvirt,rlaager/libvirt,jardasgit/libvirt,agx/libvirt,andreabolognani/libvirt,libvirt/libvirt,nertpinx/libvirt,shugaoye/libvirt,taget/libvirt,taget/libvirt,olafhering/libvirt,andreabolognani/libvirt,fabianfreyer/libvirt,zippy2/libvirt,rlaager/libvirt,fabianfreyer/libvirt,libvirt/libvirt,zippy2/libvirt,shugaoye/libvirt,agx/libvirt,zippy2/libvirt,jfehlig/libvirt,rlaager/libvirt,VenkatDatta/libvirt,datto/libvirt,taget/libvirt,crobinso/libvirt,jardasgit/libvirt,shugaoye/libvirt,olafhering/libvirt,jfehlig/libvirt,jfehlig/libvirt,jardasgit/libvirt,andreabolognani/libvirt,datto/libvirt,andreabolognani/libvirt,jardasgit/libvirt,taget/libvirt,fabianfreyer/libvirt,shugaoye/libvirt