Small TBB optimizations by changing tuning parameters for reduce, scan & scan_by_key
Merge branch 'develop' of https://github.com/HSA-Libraries/Bolt into new-changes
Removed a few warnings in TBB optimized code
Merge pull request #151 from shruti-ramesh/new-changes

TBB Optimization for Scan and reduce.
Merge branch 'develop' of https://github.com/HSA-Libraries/Bolt into BenchmarkLeveraged
Modification to comply Shenoy's comments