Copy BabySitter class from iv2-wip.  Dubious compilation.
Copy BabySitter class from iv2-wip.  Dubious compilation.

kumarrus/voltdb,ingted/voltdb,wolffcm/voltdb,kobronson/cs-voltdb,simonzhangsm/voltdb,kumarrus/voltdb,creative-quant/voltdb,kobronson/cs-voltdb,VoltDB/voltdb,kumarrus/voltdb,deerwalk/voltdb,flybird119/voltdb,paulmartel/voltdb,creative-quant/voltdb,kumarrus/voltdb,ingted/voltdb,simonzhangsm/voltdb,kumarrus/voltdb,kobronson/cs-voltdb,simonzhangsm/voltdb,VoltDB/voltdb,kobronson/cs-voltdb,flybird119/voltdb,zuowang/voltdb,wolffcm/voltdb,deerwalk/voltdb,migue/voltdb,ingted/voltdb,ingted/voltdb,VoltDB/voltdb,zuowang/voltdb,deerwalk/voltdb,zuowang/voltdb,simonzhangsm/voltdb,simonzhangsm/voltdb,migue/voltdb,creative-quant/voltdb,VoltDB/voltdb,creative-quant/voltdb,ingted/voltdb,zuowang/voltdb,paulmartel/voltdb,wolffcm/voltdb,paulmartel/voltdb,paulmartel/voltdb,deerwalk/voltdb,wolffcm/voltdb,kumarrus/voltdb,zuowang/voltdb,simonzhangsm/voltdb,wolffcm/voltdb,migue/voltdb,kumarrus/voltdb,kumarrus/voltdb,flybird119/voltdb,paulmartel/voltdb,ingted/voltdb,kobronson/cs-voltdb,paulmartel/voltdb,creative-quant/voltdb,zuowang/voltdb,deerwalk/voltdb,zuowang/voltdb,kobronson/cs-voltdb,deerwalk/voltdb,flybird119/voltdb,creative-quant/voltdb,wolffcm/voltdb,migue/voltdb,simonzhangsm/voltdb,flybird119/voltdb,kobronson/cs-voltdb,wolffcm/voltdb,kobronson/cs-voltdb,migue/voltdb,paulmartel/voltdb,ingted/voltdb,migue/voltdb,VoltDB/voltdb,ingted/voltdb,migue/voltdb,VoltDB/voltdb,deerwalk/voltdb,deerwalk/voltdb,simonzhangsm/voltdb,flybird119/voltdb,paulmartel/voltdb,creative-quant/voltdb,wolffcm/voltdb,migue/voltdb,VoltDB/voltdb,flybird119/voltdb,zuowang/voltdb,flybird119/voltdb,creative-quant/voltdb