Allow mkReducePipe vector length to be non power of 2
Allow mkReducePipe vector length to be non power of 2

Change-Id: I73ba56d07dae8215bba69d02b93081ef520edf1c

csail-csg/connectal,hanw/connectal,cambridgehackers/connectal,8l/connectal,8l/connectal,cambridgehackers/connectal,chenm001/connectal,8l/connectal,csail-csg/connectal,chenm001/connectal,hanw/connectal,cambridgehackers/connectal,cambridgehackers/connectal,csail-csg/connectal,hanw/connectal,csail-csg/connectal,hanw/connectal,cambridgehackers/connectal,8l/connectal,csail-csg/connectal,chenm001/connectal,chenm001/connectal,hanw/connectal,8l/connectal,chenm001/connectal