clang-sys-linkage

This crate is just a renamed clang-sys as of v0.29.3 published as v1.0.0.

Cargo disallows more than one package in a dependency tree linking to the same native library using the package.links Cargo manifest key. Because clang-sys had not yet hit 1.0.0, it was not uncommon for packages to end up with multiple incompatible versions of clang-sys in their dependency which resulted in Cargo refusing to compile the package. This crate exists to allow the last few pre-1.0.0 clang-sys versions to co-exist peacefully by offloading the actual implementation of the crate to this crate. As such it is obsoleted by clang-sys itself being bumped to 1.0.0 and is only used for pre-1.0.0 versions.