ACCUMULO-2993 fix division by zero
ACCUMULO-2993 fix division by zero

When given a filename, wc will output that filename, resulting in bad
division as the shell tries to interpret path separators. Instead, we
can have wc read from stdin.

phrocker/accumulo-1,apache/accumulo,adamjshook/accumulo,lstav/accumulo,mjwall/accumulo,milleruntime/accumulo,ctubbsii/accumulo,ivakegg/accumulo,adamjshook/accumulo,milleruntime/accumulo,keith-turner/accumulo,ctubbsii/accumulo,ivakegg/accumulo,mjwall/accumulo,dhutchis/accumulo,mjwall/accumulo,apache/accumulo,phrocker/accumulo-1,mikewalch/accumulo,apache/accumulo,dhutchis/accumulo,phrocker/accumulo-1,ctubbsii/accumulo,apache/accumulo,lstav/accumulo,dhutchis/accumulo,adamjshook/accumulo,milleruntime/accumulo,apache/accumulo,phrocker/accumulo-1,keith-turner/accumulo,keith-turner/accumulo,keith-turner/accumulo,mjwall/accumulo,ivakegg/accumulo,mikewalch/accumulo,dhutchis/accumulo,adamjshook/accumulo,adamjshook/accumulo,phrocker/accumulo-1,lstav/accumulo,phrocker/accumulo-1,ctubbsii/accumulo,adamjshook/accumulo,milleruntime/accumulo,ctubbsii/accumulo,keith-turner/accumulo,dhutchis/accumulo,mikewalch/accumulo,milleruntime/accumulo,dhutchis/accumulo,ctubbsii/accumulo,adamjshook/accumulo,ivakegg/accumulo,apache/accumulo,ivakegg/accumulo,dhutchis/accumulo,ctubbsii/accumulo,mikewalch/accumulo,lstav/accumulo,lstav/accumulo,mjwall/accumulo,mikewalch/accumulo,mikewalch/accumulo,phrocker/accumulo-1,dhutchis/accumulo,mjwall/accumulo,milleruntime/accumulo,adamjshook/accumulo,ivakegg/accumulo,dhutchis/accumulo,milleruntime/accumulo,lstav/accumulo,ivakegg/accumulo,apache/accumulo,mikewalch/accumulo,mikewalch/accumulo,keith-turner/accumulo,lstav/accumulo,mjwall/accumulo,adamjshook/accumulo,keith-turner/accumulo