Add 8 TeV HPP signal samples

Correct dataset paths
Use data8TeVNew for datadefs
Get zzMode from cmd line args
Create special double-higgs mode for n-tuples

 - Added a hppCompatibility function similar to zCompatibility
 - Created a separate quad cleaner for double higgs
Add H++ to 4l xsec
Add xsecs
Use nfs_scratch area for resubmit_failed_jobs
Add triple-electron trigger
Merge pull request #323 from dabelknap/hpp_slc6_dev

H++ Stuff