Mention that core::intrinsics::transmute is available at core::mem::transmute.
Mention that core::intrinsics::transmute is available at core::mem::transmute.

In #[no_std] environments, std::mem::transmute is unavailable. Searching for transmute in libcore only pulls up core::intrinsics::transmute, which is behind the (unstable) core_intrinsics feature flag. Users wishing to use transmute in #[no_std] environments typically should use core::mem::transmute instead, as it is stable. This documentation makes core::mem::transmute discoverable.

graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust