Refactored lift into an expr_ck
More changes to elwise_ck
Completed elwise on CUDA
Slight fix to CUDA elwise
Test to flush out memory leak
Reenabled a test
Disabled a test
Reenabled elwise destructor
Added ckernel_builder.cu
Added test CUDA file
Small fix for CUDA
Merge pull request #189 from izaid/elwise_2

CUDA elwise (aka CUDA lift)