Fix small bug
Fix devicearray slicing
Test stream binding
Fix reshape
Fixes multigpu with-context
Further improve multi gpu API
Merge branch 'master' into gpuarray_stream_binding

Conflicts:
	numba/cuda/cudadrv/devices.py
Fix after merge
Make all cuda array operations recognize the bound cuda stream
Merge branch 'master' into gpuarray_stream_binding
Merge pull request #743 from numba/gpuarray_stream_binding

CUDA: array slicing, stream binding, multigpu contextmanager