Since it can easily be implemented using the existing LLVM C API in terms of `LLVMAddGlobal` and `LLVMSetLinkage` and `define_private_global` was only used in one place.
Since it can easily be implemented using the existing LLVM C API in terms of `LLVMAddGlobal` and `LLVMSetLinkage` and `define_private_global` was only used in one place.