fix rustc::plugin -> rust_plugin
fix rustc::plugin -> rust_plugin

Twinklebear/rust-bindgen,rust-lang/rust-bindgen,alexander255/rust-bindgen,bsteinb/rust-bindgen,bsteinb/rust-bindgen,Twinklebear/rust-bindgen,emilio/rust-bindgen,catdesk/rust-bindgen,emilio/rust-bindgen,alexander255/rust-bindgen,jdub/rust-bindgen,emilio/rust-bindgen,japaric/rust-bindgen,jdub/rust-bindgen,rust-lang/rust-bindgen,rust-lang/rust-bindgen,jdub/rust-bindgen,catdesk/rust-bindgen,alexander255/rust-bindgen,Twinklebear/rust-bindgen,emilio/rust-bindgen,Twinklebear/rust-bindgen,catdesk/rust-bindgen,jdub/rust-bindgen,japaric/rust-bindgen,bsteinb/rust-bindgen,catdesk/rust-bindgen,rust-lang/rust-bindgen,emilio/rust-bindgen