Update NEWS for cpuset->bitmap
Update NEWS for cpuset->bitmap

This commit was SVN r2528.

ggouaillardet/hwloc,ggouaillardet/hwloc,ggouaillardet/hwloc,shekkbuilder/hwloc,ggouaillardet/hwloc,shekkbuilder/hwloc,shekkbuilder/hwloc,shekkbuilder/hwloc