o.c.numjy: Add 'ones()'
o.c.numjy: Support array as index

a=arange(5) + 10
a[ [2, 3] ] gets [ 12.0, 13.0 ]
o.c.numjy: Add nonzero()
o.c.numjy: Add nonzero() to doc
Merge remote-tracking branch 'origin/3.2.x' into 3.2.x