added docstring to for_range_slice function in cgutils.py
remove the standalone for_range_slice_dec function
added a boolean parameter to handle wheter to increment or
decrement the for loop
updated docstring
refactored tests in test_storeslice.py
cleanup
cleanup
added dtype for numpy array creation for 32-bit fix
changed add_function to get_or_insert_function call in printf
cleanup of test code - remove comments and print statement
added cast to get rid of compile warning
added np.dtype to test arrays
removed void ** cast
refactored -- changed for loop
Merge pull request #634 from numba/setitem_array_slice

Setitem array slice