Instead of patching in a disable ldconfig argument, just use the way
exposed by the rust-installer scripts to disable running ldconfig.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
Since Rust 1.3.0
(rust-lang/rust@958d563825) it has been
unnecessary to provide the data layout in targets. Additionally the data
layouts in this repo created LLVM IR on x86_64 that was differing from
other x86_64 builds of Rust.
Signed-off-by: Doug Goldstein <cardoe@cardoe.com>