Add additional inbounds propagation annotations.

[maleadt]

I guess my mental model was wrong; I thought we only needed @propagate_inbounds on the in-between layers, but apparently we also need it on

GPUArrays.jl/src/host/indexing.jl

Lines 64 to 74 in e256516

	function vectorized_getindex!(dest::AbstractGPUArray, src::AbstractArray, Is...)
	any(isempty, Is) && return dest # indexing with empty array
	idims = map(length, Is)
	# NOTE: we are pretty liberal here supporting non-GPU indices...
	Is = map(adapt(ToGPU(dest)), Is)
	@boundscheck checkbounds(src, Is...)
	gpu_call(getindex_kernel, dest, src, idims, Is...)
	return dest
	end

Note that the function below was missing the annotation too, as an in-between layer.

Fixes #542