Removed the thread header file from scatter.inl and gather.inl and removed some redundant code from reducebykey.inl
Merge pull request #73 from rkskvk/develop

Removed the thread header file from scatter.inl and gather.inl and remov...
Offset tests for scatter/gather
Removed unwanted header & commented few lines in inl files of TBB
Merge branch 'develop' of https://github.com/HSA-Libraries/Bolt into tbb_changes