reduced the I/O worker thread multiplier to 1 as default in ning AHC
got rid of fake 'bash' operator. corrected behavior of python operator. revamped scriptoperator base class
Got rid of keep context property of script operator
Merge pull request #209 from davidyan-malhar/0.9_pull

0.9 pull
made output port of alert escalation autorecord
Merge pull request #218 from davidyan-malhar/0.9_pull

made output port of alert escalation autorecord
Merge branch '0.9-migration' of https://github.com/DataTorrent/Malhar into 0.9-migration
made alert escalation auto record on whole operator as opposed to individual output ports