Replace @ccall with @gcsafe_ccall when CUDA.jl v5.3.0 is released

[amontoison]

JuliaGPU/CUDA.jl#2262
We should replace the @ccall macro with the @gcsafe_ccall macro.

I should also update the function check like Tim did in this commit:
JuliaGPU/CUDA.jl@41dcc90