scatter and scatter_if Serial and TBB code path, Added appropriate Google TestCases
Merge pull request #69 from rkskvk/develop

scatter and scatter_if Serial and TBB code path, Added appropriate Google TestCaese...
Adding TBB reducebykey.h and .inl fils
Merge pull request #70 from avinashcpandey/develop

Adding TBB reducebykey.h and .inl fils
Added gather/gather_if APIs
Merge branch 'develop' of https://github.com/HSA-Libraries/Bolt into develop