Added some fixes in serial and Multicore path for scan and scan by key routines + Added some  offset and inplace test cases for scan and scan by key + removed warning from scan routines
Merge pull request #44 from avinashcpandey/develop

Added some fixes in serial and Multicore path for scan and scan by key r...
Fixed assign issue in device_vector
Removed warnings across the bolt runtimes and all the sort routines.
Merge branch 'develop' of https://github.com/HSA-Libraries/Bolt into latest-branch
Removed warnings with 32-bit build in copy, fill & generate inl files