I modified the doc of from_elem, from_fn, I think it returns an owned vector
libstd: impl Clone for BigUint/BigInt and replace `copy` with `.clone()`
Take string slices
Use static strings
auto merge of #6127 : gifnksm/rust/impl-clone-for-bigint, r=graydon

implement `Clone` using `deriving(Clone)`.
auto merge of #6173 : sammykim/rust/doc-vec, r=yichoi

I think whether vector element is mutable is decided by whether vector reference is mutable.
Remove 'Local Variable' comments
auto merge of #6151 : bjz/rust/local-variable-cleanup, r=brson

I have noticed these comments scattered across the codebase. They appear to be vestigial Emacs formatting settings and they don't appear in newer files. For the sake of consistency it's probably best to remove them.
auto merge of #6174 : sanxiyn/rust/static-string, r=brson