Binding generator sub-crate

[termoshtt]

Split from #4

This is split for generating static bindings.

Usage

cuda-bindgen --all output/directory/path cuda/installed/path

will generate cuda.rs, cuda_runtime.rs, and so on at output/directory/path based on headers in cuda/installed/path/include.

cc: @LutzCle

[LutzCle]

I get a StructOpt compile error. See LutzCle@fec6e3b for details and the fix.

[LutzCle]

When running cuda-bindgen per the instructions in the parent, I get the following error messages:

[2019-01-09T15:42:59Z ERROR bindgen::ir::context] unused option: --whitelist-function ^CU.*
[2019-01-09T15:42:59Z ERROR bindgen::ir::context] unused option: --whitelist-type ^cudaMem.*
[2019-01-09T15:43:00Z ERROR bindgen::ir::context] unused option: --whitelist-var ^cublas.*

Removing the affected bindgen commands seems to solve the problem. The diff of before and after the fix is empty (i.e., no changes for the generated bindings) on CUDA 10.0.130 on ArchLinux. See the fix at LutzCle@22dc7ef

Could someone verify this, preferably on another OS and CUDA version?

[termoshtt]

@LutzCle Thanks review!

I get a StructOpt compile error. See LutzCle/cuda-sys@fec6e3b for details and the fix.

I guess this is due to https://github.com/rust-lang/rust/pull/551480 and fixed in latest stable release.